MTB cranks are among the most impactful drivetrain upgrades on a mountain bike. better stiffness translates to more efficient power transfer on climbs and sprints, and the right arm length improves pedaling comfort and ground clearance. These five picks cover 1x drivetrain builds from entry-level trail to race-day XC.
| Product | Price | Best For | Rating |
|---|---|---|---|
| SRAM NX Eagle DUB | ~$75 | 1x12 upgrade on a budget | 4.5/5 |
| Shimano Deore FC-M6100 | ~$70 | Entry 12-speed trail build | 4.5/5 |
| Race Face Next SL | ~$220 | Light XC and all-mountain | 4.7/5 |
| SRAM GX Eagle DUB | ~$130 | Performance trail and enduro | 4.7/5 |
| e*thirteen LG1 | ~$115 | Enduro durability focus | 4.6/5 |
SRAM NX Eagle DUB - Best Budget MTB Crank
The SRAM NX Eagle DUB brings full Eagle 12-speed compatibility to an accessible price point. The DUB spindle is the same interface used across all Eagle cranks, so bottom bracket compatibility is identical whether you are running NX or XX SL. The hollow alloy arms are a genuine upgrade over steel OEM cranks in both weight and stiffness. Direct mount chainring interface accepts Eagle-compatible rings. For riders converting an existing MTB to 1x12 on a limited budget, or building a new trail bike without overspending on the drivetrain, the NX Eagle is the starting point.
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Shimano Deore FC-M6100 - Best Budget Shimano MTB Crank
The Shimano Deore FC-M6100 is the 12-speed entry point in Shimano’s MTB lineup and offers more stiffness and precision than its price suggests. The Hollowtech II spindle gives universal compatibility with Shimano external bearing BBs across all supported shell standards. Available in 170mm and 175mm arm lengths. The 12-speed Shimano drivetrain integration is clean and reliable. For riders who prefer Shimano’s shifting feel and want to build a complete 12-speed trail drivetrain without overspending, the Deore crank is the appropriate starting point before stepping up to SLX or XT.
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Race Face Next SL - Best Lightweight MTB Crank
The Race Face Next SL is built for riders who want the weight savings of high-end construction without going full XC race spec. The CINCH interface makes chainring swaps tool-free. Carbon arm layup keeps the weight close to XTR and XX SL territory while maintaining trail-appropriate durability. Available in 165mm and 170mm. The wider arm stance improves chainline stability under lateral load, which matters on technical singletrack. For all-mountain riders and XC riders who want a light, stiff crank with easy chainring changeability, the Next SL is an excellent choice at its price.
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SRAM GX Eagle DUB - Best Performance MTB Crank
The SRAM GX Eagle DUB delivers the best performance-to-price ratio in the Eagle lineup. The hollow aluminum arms are stiffer and lighter than NX, and the finish quality is a meaningful step up. Full 12-speed Eagle compatibility and DUB interface are shared with all SRAM Eagle cranks. Available in 170mm and 175mm. For trail riders who want performance at or near XT/XTR levels without the race price, the GX Eagle DUB is the honest recommendation. It is the most popular Eagle crank for a reason. it hits the sweet spot of price, stiffness, and weight for everyday trail riding.
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e*thirteen LG1 - Best Enduro MTB Crank
The ethirteen LG1 is designed from the ground up for enduro and aggressive trail riding where durability under impact matters more than maximum weight savings. The wide arm profile resists bending from rock strikes and root impacts better than narrower trail-focused cranks. The 30mm alloy spindle provides excellent stiffness. It uses ethirteen’s own chainring interface, and the brand offers a wide range of ring sizes and tooth profiles suited for enduro gearing. For riders on enduro-geometry bikes who prioritize component survival over gram counting, the LG1 is the specialist pick.
Search for e*thirteen LG1 Enduro Mountain Bike Crankset on Amazon
What to Look For in an MTB Crank
Match the spindle interface to your frame’s BB shell first. getting this wrong means the crank will not fit. For 1x drivetrains, confirm the direct mount or BCD chainring interface is compatible with the rings you want to run. Arm length selection is increasingly a personal fit decision; 165mm is worth considering if you ride technical terrain or experience hip discomfort. Drivetrain ecosystem compatibility (SRAM Eagle vs Shimano 12-speed) locks you into one brand’s chains and cassettes. Enduro and gravity riders should weight durability over weight savings; XC and cross-country riders benefit most from lighter, stiffer options.
Final Thoughts
The Shimano SLX and SRAM GX Eagle DUB are the best value picks for the majority of trail riders. Budget builds start well with the Shimano Deore or SRAM NX Eagle. The Race Face Next SL is the standout choice for riders who want light construction with easy chainring changes. The e*thirteen LG1 is the specialist for enduro durability. Any of these five cranks will meaningfully improve a budget-spec MTB’s drivetrain feel and pedaling efficiency.
Frequently asked questions
What MTB crank length should I choose?+
170mm is the standard for most adult MTB riders and suits frames from short to long. The trend toward shorter cranks, 165mm and 160mm, continues to grow because shorter arms improve hip clearance, reduce pedal strikes, and allow lower bottom bracket heights on modern trail geometry. If your current cranks cause hip discomfort or you pedal through technical rock sections, try 165mm before committing.
SRAM or Shimano cranks for MTB. which is better?+
Both SRAM and Shimano make excellent MTB cranks. SRAM Eagle (DUB spindle) and Shimano (Hollowtech II) are the dominant systems for 12-speed drivetrains. They are not cross-compatible. chainrings, chains, and cassettes stay within each ecosystem. Choose the crank that matches your existing drivetrain. If building from scratch, either SLX or GX Eagle are the best mid-range starting points with strong community support.
Can I run a 32T chainring on any MTB crank?+
You can run a 32T chainring on most 1x MTB cranks if the BCD and interface type are compatible. Common chainring sizes for MTB 1x are 30T to 36T. Check whether your crank uses a direct mount interface (most modern designs) or a bolt circle diameter (BCD) bolt pattern. Direct mount rings are crank-family specific, while BCD rings are interchangeable within a matching diameter group. Always confirm compatibility before purchasing.