SRAM 64mm Alloy
SRAM

SRAM 64mm Alloy

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SRAM 22T inner chainring for 10-speed MTB triples with 64mm BCD. CNC-machined aluminum offers low weight, crisp 10-speed shifting, and durable black finish.

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Product Details

Overview & Technology

SRAM 64mm Alloy 22T inner chainring is engineered for classic MTB triple cranksets that use a 64mm BCD and 4-bolt pattern. Machined from high-grade aluminum and finished in anodized black, this 22-tooth ring is optimized for 10-speed chains and delivers reliable engagement, smooth shifting, and long wear life for off-road use. The ring uses precision CNC machining to maintain tight tolerances across tooth profiles and bolt holes, which preserves chainline and reduces noise under load. The 22T size gives low gearing for steep climbs and loaded bikepacking days while the inner position tooth profile is shaped for positive chain retention and consistent front shifting when paired with a compatible front derailleur.

Key Features & Benefits

Material and construction: CNC-machined aluminum provides a balance of stiffness, light weight (approximately 36 g / 0.08 lb shipping weight) and corrosion resistance thanks to the black anodized finish. The 4-bolt 64mm BCD pattern is a common MTB triple standard for compatibility with many older and modern cranksets. Real-world benefits include crisp, predictable front shifts under load, minimal added rotating mass compared to heavier steel rings, and durable anodized protection for long service life. The ring is sold as an inner position piece and is built specifically for 10-speed chain widths and tooth ramps tuned to that speed.

Fit, Compatibility & Installation

This chainring fits 4-bolt crank spider designs with a 64mm BCD and is intended as the inner ring on MTB triples. It's specified for 10-speed drivetrains but will often work with 9-speed chains; shifting performance is tuned for 10-speed chain geometry. Confirm your crank spider uses a 64mm BCD and accepts a 4-bolt inner ring before purchasing. Installation is straightforward: align the chainring to the bolt holes and torque chainring bolts to your crank manufacturer's recommended spec (commonly around 8–12 Nm). Use grade-appropriate chainring bolts and check front derailleur height and limit screws after fitment. Manufacturer Part #: 11.6215.188.370 (Model ID: CR-MLEG-64-A1, SKU 390600).

Who This Chainring Is For

This SRAM 22T inner chainring is ideal for mountain cyclists who run a triple crankset and need a lightweight, durable low gear for steep climbs, technical hikes, or loaded touring. It's a practical spare or replacement for older and current MTB triples that use the 64mm BCD standard. Choose this ring if you value proven SRAM quality, want a restoration or upgrade for a 10-speed triple drivetrain, or need to replace a worn inner ring without swapping the entire crankset. It's not intended as a narrow-wide single-ring solution for modern 1x systems.

Key Features

  • ✓ CNC-machined 22T aluminum for precise tooth geometry and light weight
  • ✓ Designed for 64mm BCD 4-bolt MTB triple cranksets
  • ✓ Optimized tooth profile for 10-speed chains and smooth front shifts
  • ✓ Anodized black finish resists corrosion and surface wear
  • ✓ Ideal low gear for steep climbs, bikepacking, and technical trails
  • ✓ Fits many legacy and current SRAM-compatible 64mm BCD cranks

Specifications

BCD 64
Chainring Bolts 4
Chainring Comp. MTB triple
Teeth 22
Material Aluminum
Position Inner
Primary Color Black
Speed 10

Product Identifiers

Vendor Item # 11.6215.188.370
UPC 710845663024

Frequently Asked Questions

Will this chainring work with 9-speed chains?

This ring is profiled and optimized for 10-speed chains, but it is often compatible with 9-speed chains. Expect the best shifting performance with a 10-speed drivetrain; 9-speed may function but could be less crisp.

How do I know if my crank uses a 64mm BCD?

Measure the bolt circle diameter or check your crank manufacturer specs. For a 4-bolt inner ring, 64mm BCD is common on many MTB triples — measure center-to-center across opposite bolt holes or consult your crank model documentation.

Can I use this ring as a middle or outer chainring?

No — this ring is specifically an inner-position chainring. Middle and outer rings use different tooth profiles, spacing, and ramping designed for cross-chain shifts and should be selected accordingly.

Are chainring bolts included?

The product listing is for the chainring only. Use appropriate 4-bolt chainring bolts compatible with your crank (length varies by setup). Always torque to the crankmaker's recommended specification.

How durable is the alloy and finish?

The CNC-machined aluminum body with anodized black finish resists corrosion and withstands typical trail use. As with any alloy ring, heavy impacts or grinding on rocks can nick teeth — regular inspection and replacement when worn will keep shifting reliable.

Can I mix SRAM chainrings with other brands of cranksets?

Mechanically, the 64mm BCD and 4-bolt pattern determine fit. Many cranksets with matching BCD will accept this ring, but shifting performance is best when chainrings and crank/derailleur geometry are compatible. Verify bolt fit and chainline before installing.

Buying Guide

When buying an inner chainring for an MTB triple, prioritize BCD, bolt count, tooth count, and speed compatibility. Measure your crank's BCD or check the crank model to ensure a 64mm 4-bolt pattern. Choose the tooth count (22T here) based on desired climbing ability and cadence. Material and tooth profiling matter: aluminum rings are light and stiff, while steel lasts longer under heavy wear. For 10-speed systems stick with rings profiled for that chain width to maintain crisp shifting and reduce chain drop. Keep spare bolts and check bolt length when mixing chainrings across brands.

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