Chainrings

Wolf Tooth was first to market with Cyclocross 1x specific chainrings because we saw Cyclocross as the perfect use for our Drop-Stop® technology. Since their release, the uses for these rings has expanded beyond Cyclocross to commuting, gravel riding, mountain bikes with 5-arm crank power meters, and even full on-road applications with the giant 50t rings. Fits 110 BCD 5 arm cranksets Drop-Stop technology. On Wolf Tooth’s patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction. Alternating wide/narrow tooth pattern prevents chain derailment Compatibility: - These rings are for use with 110 BCD 5-arm cranksets. - Stock 2x bolts will not work. You will need bolts like our 6mm bolts which are optimized for single ring mounting. - Chainline - varies - these rings can be mounted in either the big or small ring position on a double cranksets. The most common mounting is in the big ring position because of chainstay clearance. The ring centerline is ~2mm from the ring's mounting face so they usually sit about 2mm closer to the frame than the stock big ring (depends on the stock ring) Recommendations - Recommend the use of a clutch-style rear derailleur for the best chain security. - If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur! - Without these precautions, you may experience chaindrops and/or chainsuck. Tech Specs: - Weight: 34t/44g | 36t/58g | 38t/66g | 40t/74g | 42t/81g | 44t/90g | 46t/107g | 48t/115g | 50t/125g - Material: 7075-T6 aluminum - Made in the USA

Looking for a SRAM XO1, X1, GX, and NX chainring with the proven chain retention of our patented Drop-Stop® chainrings? Wolf Tooth has what you need in these beautifully machined 94 BCD bolt-on chainrings. - Fits any 94 BCD SRAM crankset - Drop-Stop® technology. On Wolf Tooth’s patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction. - Alternating wide/narrow tooth pattern prevents chain derailment Compatibility: - These rings fit any SRAM mountain bike crankset with a 94 BCD. Note that we also offer SRAM direct mount chainrings for standard, boost and BB30 short spindle cranksets and some stainless steel versions. - If using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention) - Chainline - 49mm - Provides a great chainline on most boost bikes. Use Drop-Stop A or B for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains DROP-STOP A Wolf Tooth Drop-Stop A is the original patented wide/narrow chainring compatible with multiple drivetrain brands including 9, 10, 11, and 12spd SRAM Eagle, KMC, Wippermann, etc. NOT compatible with 12spd SRAM Transmission (T-Type) Flattop, 12spd Shimano HG+, or 12spd Campy Recommendations - If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur. Without these precautions, you may experience chaindrops and/or chainsuck. Tech Specs: - Weight: 30t • 44g | 32t • 54g | 34t • 63g - Material: 7075-T6 aluminum - Made in the USA - US Patent 958123

The direct mount chainrings for SRAM cranksets with the 3-bolt mounting interface. They replace your existing spider and chainring with one clean looking, lightweight, and stiff piece of machined billet. They are available in the Drop-Stop B tooth profile, which is optimized for SRAM Flattop chain. It is also compatible with all other 9-, 10-, 11-, and 12-speed chains except the Shimano 12-speed chain. Compatibility: - These direct mount chainrings will replace your existing chainring and spider or replace the direct mount ring on SRAM cranksets including the DUB cranks. The ring is attached via 3 bolts on the back side of the spider near the spindle. Note that these chainrings are NOT compatible with SRAM 8-bolt direct mount cranksets. - Wolf Tooth's patented Drop-Stop® wide/narrow tooth profile for the ultimate chain retention and mud shedding ability - There is one offset: Standard Road/CX/Gravel: 6mm offset for cyclocross and road crank applications with 47mm chainline - Praxis Works Road/CX cranks use the 6mm offset. - If using a 9-speed drivetrain, use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention). Available in multiple tooth profiles for optimal performance based on your chain type. Use Drop-Stop ST for use with Shimano 12-speed Hyperglide+ and 12spd KMC chains. Use Drop-Stop A for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains. Drop-Stop B is optimized for SRAM 12 spd Transmission (T-type) and Road Flattop chains but is compatible with all chains that work with Drop-Stop A. DROP-STOP B - Compatible 9, 10, 11, and 12spd SRAM Eagle, 12spd SRAM Transmission (T-type) Flattop, 12spd Campy, 12spd KMC - Not compatible with 12spd Shimano HG+ chains Recommendations - - Recommend the use of a clutch style rear derailleur for the best chain security. - An L-wrench works best since the crank spindle may contact a socket adapter and prevent it from engaging properly. - Use the same 3 bolts to attach the Wolf Tooth ring or we carry replacement bolts Tech Specs: - Weights: 38T/90g | 40T/106g | 42T/111g - Material: 7075-T6 aluminum - Made in the USA

Shimano Sora 9-Speed replacement chainrings gets your drivetrain operating smoothly again.

Shimano chainrings offer durability and confidence-inspiring performance, and go a long way towards getting a drivetrain back to optimum working condition.

Shimano Ultegra R8000 Series Chainrings are designed for use with Shimano's 11-speed Ultegra crankset.

- X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear - Specially designed tooth profiles for improved wear - More durable finish - Bolt Circle Diameter (BCD): 107 BCD - Speeds: 12 - Material: Aluminum

SRAM X-Sync Road Direct Mount Chainrings for Rival drivetrains feature a wide-tooth, narrow-tooth design to provide maximum chain control. - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control - Laser-etched chainring finish is more durable - X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear Specifications: - Round or Oval: Round - Direct Mount Type: Direct Mount SRAM - Tooth Count: 38 - Material: Aluminum - Ring Position/Type: Chain Retaining Single Ring - Drivetrain Speeds: 12

SRAM's X-Sync Road Chainrings are designed for provide maximum control when used with AXS road cranksets. - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control - Laser-etched chainring finish is more durable - X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear - Can be installed with a single tool, making gearing changes a breeze

Rugged durability comes naturally to the XX Eagle T-Type direct mount chainring. Finished with a distinct, dual-spoke design your shifting will never be compromised. - 3mm offset - Light weight and incredibly durable aluminum chainring - 8-bolt direct mount design (Mounting bolts included) - Compatible with SRAM T-Type chains

SRAM's XX1 X-Sync Chain Ring mates perfectly to SRAM's XX1 crank. It features a wide-narrow-wide tooth profile to securely hold the chain through the roughest terrain, no chainguide necessary. A variety of sizes ranging from the spin-to-win 28T to the hard-man humbling 38T let you dial in your rig for your strengths or terrain. The unique chainring design allows you to slide slide over the crank arm, so crank removal is not required.

Replace worn-out chainrings or change out gearing with SRAM's Yaw Compatible Inner Chainring. This solid ring is crafted from aluminum using SRAM's X-Glide tooth profiles for quick, responsive shifting. This chainring works for SRAM's Yaw front derailleurs on both 10- and 11-speed drivetrains. The 42-tooth version works best when paired with a 55- or 54-tooth big ring.

RaceFace Narrow Wide Chainrings feature tooth profiling for chain retention and a blend of weight and durability suitable for XC, DH, and everything in-between. - 7075-T6 aluminum, aerospace grade strength - Compatible with 9, 10, 11 and 12 speed - Stiff 4mm plate thickness and I-beam construction transfer loads without flexing - Reversible laser etched graphics - Non-threaded bolt holes

Narrow wide chainrings compatible with Race Face CINCH system cranks. Direct mounting allows an easy switch between rings and spiders. - Compatible with 9, 10, 11, and 12 speed - Narrow Wide tooth profiling ensures consistent chain retention - Lockring installed/removed with ISIS BB tool - Stiff 4mm plate thickness to transfer loads without flexing

Gates Carbon Drive CDX Front belt drive rings are crafted with 6061 aluminum and work well for high-mileage touring or rugged off-roading. - Constructed of 6061 aluminum - 11mm pitch - CDX CenterTrack belts, cogs and rings do not interchange with any part of a CDC/CDX MudPort system

FSA Super Road Chainrings are designed to provide flawless shifting, with minimal weight and unmatched durability. - Precision CNC machined AL7075/T6 - Shifting ramps and stainless steel pins on outer rings - 110mm asymmetric (ABS) - Black anodized with CNC silver - Laser etched logo - Compatible only with Gossamer ABS cranks - Will not properly fit K-Force or SL-K cranksets

Shifting performance has helped Full Speed Ahead to become a world leader for high-end chainrings. No one studies the design and manufacturing of each system, and each tooth, as carefully as we do. Our dedication shows in every revolution of the crank, and every perfect shift achieved. To meet or exceed the needs of any drivetrain, Full Speed Ahead has developed sophisticated design, testing and manufacturing protocols. This allows Full Speed Ahead to match your needs as perfectly as our chainrings match a chain. We offer more options, levels, and finishes than our competitors. We use the best materials available, imported from the USA, Europe, or sourced from our qualified vendors in Asia, to guarantee the durability, performance, and appearance will out-perform, and outlast the competition. Full Speed Ahead chainrings have powered multiple World, Tour de France, and Olympic champions, and will exceed your expectations. - Stamped AL7075/T6 - Chainrings are compatible with all 10-speed drivetrains, and compatible with FSA, SRAM, and Shimano 11-speed drivetrains - Drivetrain Speeds: 11, 10

FSA Pro Road Chainrings deliver flawless shifting for any road drivetrain. - Precision CNC machined AL7075/T6 alloy

Next level spin. The forged one-piece design of the SL SpideRing is a handsome piece of engineering and one of the finest front shifting sets available. Where it thrives: The open road, up and down hills What it's built for: Durability, efficiency Highlights: - One-piece technology makes for reduced weight and increased stiffness and durability - X-Sync thick/thin tooth profiles for secure chain management - Eye-catching and unique design

- CNC machined 6061-T6 alloy - Fits 1-piece and 3-piece BMX cranks - 23.8mm hole for 1-piece cranks with shims for 19/22mm 3-piece cranks included - Hard anodized coating - Unique, 1/8" quiet drive technology - Mount Compatibility: 1-piece/3-piece - Chain Compatibility: 1/2" x 1/8"

Lighter, stronger, and better looking than our original Guiderings; the Guidering SL is intended for use on TRS, LG1, and legacy e*thirteen cranks. The Guidering SL is -8mm offset. This offset will achieve both boost (52mm) and non-boost (49mm) spacing on e*thirteen cranks that feature adjustable chainline (2019 and newer TRS & LG1). On legacy and XCX cranks the Guidering SL will achieve a 49mm non-boost chainline. - Direct Mount chainring for TRS and LG1 cranks - Updated M3 narrow-wide tooth profile eliminates chain noise, and decreases overall system wear while retaining chain - 10/11/12 speed. Compatible with both Shimano and SRAM 12-speed drivetrains - Allows both Boost 148mm and non-boost 142mm chainline on adjustable TRS and LG1 cranks SL Chainrings are not compatible with Helix cranks. Helix cranks require Helix rings.

UL Chainrings are the lightest 1x XC/Gravel chainrings on the market. Using the SL Chainring as the platform, we tweaked the arm design and strategically machined the chainring so that only minimal sacrifice was made in impact strength for large gains in weight reduction. - Direct Mount chainring for XCX, TRS, and LG1 cranks - Updated M3 narrow-wide tooth profile eliminates chain noise, and decreases overall system wear while retaining chain - 10/11/12 speed. Compatible with both Shimano and SRAM 12-speed drivetrains - Provides Boost 148mm chainline on XCX Mountain cranks and 142mm chainlines on XCX Gravel cranks - Provides chainline for Superboost spacing on TRS and LG1 cranks UL Chainrings are not compatible with Helix cranks. Helix cranks require Helix rings available soon.

absoluteBLACK Oval 76 BCD Chainrings greatly improve traction and climbing abilities. They are designed for Rotor REX cranksets with their original 1x spider. Lighter and stiffer than original chainrings, these provide a super-smooth pedaling sensation. The specially designed narrow-wide tooth profile keeps the chain snug, allowing you to leave your chain keeper in the garage. They are crafted from CNC machined 7075 aluminum and feature an anodized finish for exceptional durability. Ovality has been optimized for each chainring size, ranging from 10.2-14.4%, with timing of 110.5-116.3° after TDC (top dead center). - Only compatible with Rotor Rex cranks - Oval shape reduces stress on knees, helps to keep your legs fresh, and does not feel any different while riding - The unique, patent-pending narrow-wide tooth profile keeps the chain in place - Teeth have been 3D-machined for ultimate mud shedding and quieter operation - Provides excellent weight-to-strength ratio

Premium Campagnolo compatible Oval chainrings designed for Super Record, Record and Chorus 4-bolt 145/112bcd cranks. They work perfectly with 11 & 12spd drivetrains thanks to our ingenious design. Incredibly stiff and light. Super-fast shifting thanks to our patented shifting ramp design. Same brilliant oval design like in the rest of the collection. Use original bolts. It is the most Premium oval chainring on the market with scientifically proven performance gains. ADVANTAGES OF OUR SPECIAL CAMPAGNOLO COMPATIBLE OVAL CHAINRINGS: - Finest design to provide excellent weight-to-strength ratio - One of a kind special oval shape (Patent Pending) - Superb quality and great look. - You will ride faster using ovals. - You will not "feel" the oval shape at all - Reduces stress on knees - We mastered our oval chainrings to perfection, so you can get best possible advantage from the oval/elliptical shape. - Size (Mass +/-1g): 53T (90g), 39T—(42g) - Compatibility: Campagnolo Super Record, Record, Chorus 4-bolt 145/112bcd for 11 and 12spd versions. - CNC machined 7075 Txxx Aluminum. Long-lasting construction - Ovality: Optimized to each size separately. 39T- 10.4%, 53T—10-11.2% - Timing of 108 -110.5° after TDC (top dead center)—ideal for road climbing

Wolf Tooth was first to market with cyclocross 1x specific chainrings because we saw cyclocross as the perfect use for our patent pending Drop-Stop® technology. These beautifully machined 110 BCD asymmetric 4-bolt chainrings are optimized for your 1x Shimano CX / road / gravel drivetrain whether you run Dura Ace 9000, Ultegra 6800, 105 5800, or Tiagra 4700. They are also offset for the ideal 1x chainline. - Fits 110 BCD Asymmetric 4-bolt Shimano cranks - Drop-Stop technology. On Wolf Tooth's patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction. - Alternating wide/narrow tooth pattern prevents chain derailment Compatibility: - Fits 110 BCD asymmetric 4-bolt cranks - All sizes compatible with Dura Ace 9000, Ultegra 6800, 105 5800, RS510, Tiagra 4700 or 4703, Sora R3000 or R3030, and Claris R2000 or R2030 cranks. - 38-50t are compatible with 105 R7000, Ultegra R8000, and Dura-Ace R9100. The 36t chainring is NOT compatible with these cranks. - NOT compatible with Dura-Ace R9200, Ultegra R8100, and 105 R7100 Cranks - Size 42t and larger will work with the Dura Ace 9100 power meter - Mounts in the big ring position of the cranks but is offset inward for perfect chainline. - The stock 2x bolts will not work. You will need our 6mm bolts which are optimized for single ring mounting. - If using a 9-speed drivetrain use a 10-speed chain. It fits tighter for better chain retention - Chainline 47.5mm - Use Drop-Stop B for all SRAM Eagle, SRAM Road and Transmission (T-Type) Flattop chains, 9, 10, and 11spd chains or 12spd KMC, Connex, Wippermann, Campagnolo. DROP-STOP B Compatible 9, 10, 11, and 12spd SRAM Eagle, 12spd SRAM Transmission (T-type) Flattop, 12spd Campy, 12spd KMC Not compatible with 12spd Shimano HG+ chains

These chainrings are for Shimano GRX cranks. They feature our patented Drop-Stop® design for the best wear life, chain retention, and mud clearance. Drop-Stop ST is specifically for the Shimano 12-speed Hyperglide+ chain, which is used by GRX 12-speed. Drop Stop-B works with all other 9, 10, 11, and 12-spd chains, including SRAM Flattop. Compatibility: - Shimano GRX cranksets including RX600 and RX810 - Drop-Stop ST is designed for Shimano 12-speed Hyperglide+ chains - Drop-Stop B tooth profile is compatible with SRAM Flattop chain - Wolf Tooth’s patented Drop-Stop wide/narrow tooth profile provides the ultimate chain retention and mud-shedding ability - Use Drop-Stop B for all SRAM Eagle, SRAM Road and Transmission (T-Type) Flattop chains, 9, 10, and 11spd chains or 12spd KMC, Connex, Wippermann, Campagnolo. DROP-STOP B Compatible 9, 10, 11, and 12spd SRAM Eagle, 12spd SRAM Transmission (T-type) Flattop, 12spd Campy, 12spd KMC Not compatible with 12spd Shimano HG+ chains

Wolf Tooth was first to market with cyclocross 1x specific chainrings because we saw cyclocross as the perfect use for our Drop-Stop® technology. Since their release, the uses for these rings has expanded beyond cyclocross to commuting, gravel riding, and even full on-road applications with the giant 52t rings. - Fits 130 BCD 5 arm cranksets - Drop-Stop technology. On Wolf Tooth’s patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction. - Alternating wide/narrow tooth pattern prevents chain derailment Compatibility: - These rings are for use with 130 BCD 5-arm cranksets. - Do NOT fit on the cranksets for Shimano DA 9000 / Ultegra 6800 - Not compatible with Campy CX10/11. - SRAM Exogram cranksets with inset nut must use stock fifth bolt + spacer(s). The Force CX1 bolt features a fifth bolt with 1x specific shoulder. This kit can be found online. - 38T important note: The chain may contact the spider arm slightly when using the 38T chainring (see last photo in the product images). We recommend filing a small chamfer on the spider arm but you can also just install it and let the chain do the work. This is only an issue with the 38T as the 130 BCD was designed for 39T smallest ring. - Stock 2x bolts will not work. You will need bolts like our 6mm bolts which are optimized for single ring mounting. Tech Specs: - Weight: 38t/52g | 40t/60g | 42t/62g | 44t/79g | 52t/132g - Material: 7075-T6 aluminum - Made in the USA - This 1x chainring and can be mounted in either the inner or outer ring position of a double crankset but can not be used in a 2x setup. - Chainline - The most common mounting is in the outer ring position because of chainstay clearance. The ring centerline is ~2mm from the ring's mounting face so they usually sit about 2mm closer to the frame than the stock big ring (depends on the stock ring) Use Drop-Stop B for all SRAM Eagle, SRAM Road and Transmission (T-Type) Flattop chains, 9, 10, and 11spd chains or 12spd KMC, Connex, Wippermann, Campagnolo. Recommendations - If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur. Without these precautions, you may experience chaindrops and/or chainsuck.

"The perfect solution when you need something smaller than a 30t on your 104/64 BCD cranks or your 11-speed Shimano XT and SLX 96/64 BCD cranks. Also, they look great when paired with our 104 BCD bash ring on a 104/64 BCD crankset - Fits any 104/64 BCD crankset (104 BCD is the middle/big position 64 is the smallest ring position) - Drop-Stop technology. On Wolf Tooth's patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction. - Alternating wide/narrow tooth pattern prevents chain derailment Compatibility - Fits any 104/64 BCD crankset (104 BCD is the middle/big position 64 is the smallest ring position) - The Universal Model fits both 104/64 BCD cranksets and the Shimano 11 speed XT M8000 cranks and SLX M7000 cranks. - If using a 9-speed drivetrain use a 10-speed chain. It fits tighter for better chain retention - Chainline (approximate as BB centering and cranksets vary) - Chainline is 46mm on a triple and 48mm on a double crank - Chainline on a Standard M8000 or M7000 crankset is 48mm and 50mm on a boost version - You will use the stock bolts to mount to this chainring - Use Drop-Stop A for all 9, 10, 11 spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains Recommendations - If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur! Wihtout these precautions, you may experience chaindrops and/or chainsuck"

The Wolf Tooth 76 BCD chainrings work great on any 76 BCD spider or crankset. These will replace the more expensive rings used on SRAM XX1 spiders or other manufacturer's spiders such as Cannondale. Also a great fit on the Specialized Stout crankset. - Fits any 76 BCD crankset or spider - Drop-Stop® technology. On Wolf Tooth's patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction. - Alternating wide/narrow tooth pattern prevents chain derailment Note - Use standard M8 chainring bolts, not the M8.5 bolts included with XX1 spiders. Our patented Drop-Stop tooth design provides superior chain retention, wear life and mud-shedding capability. Compatibility: - These rings fit any SRAM 76 BCD spider or Specialized Stout crankset. Here are instructions on how to measure your BCD. - Threaded for standard M8 chainring bolts. For the XX1 spider, we recommend the 6mm bolts (or any short M8 chainring bolt). For the Stout crankset we recommend the 10mm bolts or the bolts that come with the crankset. - If using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention). Use Drop-Stop A or B for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains DROP-STOP A Wolf Tooth Drop-Stop A is the original patented wide/narrow chainring compatible with multiple drivetrain brands including 9, 10, 11, and 12spd SRAM Eagle, KMC, Wippermann, etc. Recommendations If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur. Without these precautions, you may experience chaindrops and/or chainsuck Tech Specs: - Weight: 30t/45g | 32/51g - Material: 7075-T6 aluminum - Made in the USA

This 94 BCD 5-bolt ring will serve all your Vintage crankset and Surly OD crankset needs. - Fits any 94 BCD 5-bolt crankset (modification may be needed) - Drop-Stop technology. On Wolf Tooth’s patented wide/narrow chainring, the wide side of the tooth has maximum contact on the drive side which spreads the load and improves chainring life. The narrow side allows clearance for mud and debris which reduces friction. - Alternating wide/narrow tooth pattern prevents chain derailment Compatibility: - Four of the holes are threaded and one is a normal through bolt hole (done for Surly compatibility). Use a stock 10mm chainring bolt for the fifth, hidden arm. - These rings fit any 94 BCD 5 bolt crankset (possible alterations needed to fit some crankarms) - For Plus size bike applications with the Surly OD crankset, e.g. Instigator and Krampus, you will need to use the stock spacers (Spacer Kit QBP Part number CR8609) that came with your 1x setup. You will also need some 16mm bolts which can be purchased from Problem Solvers. - If using a 9-speed drivetrain use a 10-speed chain (shifts and works well on a 9-speed drivetrain and fits the ring tighter for better chain retention). - Provides a great chainline on most boost bikes. - Chainline (approximate as BB centering and cranksets vary) DROP-STOP A Wolf Tooth Drop-Stop A is the original patented wide/narrow chainring compatible with multiple drivetrain brands including 9, 10, 11, and 12spd SRAM Eagle, KMC, Wippermann, etc. Recommendations If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur. Without these precautions, you may experience chaindrops and/or chainsuck. Tech Specs: - Weight: 28t/37g | 30/48g | 32t/57g - Material: 7075-T6 aluminum - Made in the USA