Truvativ 9 Speed Steel 64mm BCD
Truvativ

Truvativ 9 Speed Steel 64mm BCD

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Replacement Truvativ 22-tooth steel inner chainring for 9-speed MTB triples. 64mm 4-bolt BCD, black finish — built for reliable shifting and long wear.

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Product Details

Overview & Technology

Truvativ's 22T 9-speed inner chainring is a simple, rugged replacement built for mountain bike triple cranksets that use a 64mm 4-bolt BCD. Manufactured from high‑strength steel and finished in matte black, this inner ring focuses on durability and consistent chain engagement rather than lightweight race geometry. The ring is designed to match 9‑speed drivetrains and carries SRAM's model ID CR‑MLEG‑64‑A1 (manufacturer part # 11.6215.064.000). Its stamped and formed steel construction resists deformation under load, and the black corrosion‑resistant coating helps extend service life in wet, muddy conditions.

Key Features & Benefits

Practical construction for real-world riding: the steel material provides long wear life and toughness when compared with thinner alloy or CNC rings used for lightweight builds. The 22 tooth inner profile offers low gearing for steep climbs and technical sections on trail and fireroad rides. • 64mm BCD, 4‑bolt pattern — fits common MTB triple cranks that use the 64mm inner bolt circle. • 9‑speed tooth profile — optimized for reliable shifting with standard 9‑speed chains. • Durable steel — high strength and wear resistance for everyday trail abuse and heavy use.

Fit & Compatibility

This chainring is specifically an inner ring for MTB triple cranksets with a 64mm (64 BCD) 4‑bolt mounting pattern. It's intended for 9‑speed drivetrains — it will work with 9‑speed chains and shifters; mixing across adjacent speeds may function but is not recommended for best shifting precision. Confirm your crank's bolt circle diameter (64mm) and that your crank accepts a 4‑bolt inner ring. The Truvativ part number (11.6215.064.000) and SRAM model ID (CR‑MLEG‑64‑A1) are useful references when matching to OEM cranksets. Note: this is an inner chainring only — replacement requires existing outer/middle rings and appropriate chainring bolts.

Who This Is For

Riders who prioritize durability, affordability, and straightforward fitment will appreciate this Truvativ steel inner ring. It's ideal for commuter and trail riders, bike park regulars who want a robust replacement part, and anyone maintaining older or OEM triple cranksets that use 64mm BCD inners. If you race cross‑country on ultralight builds or seek the lowest possible rotating mass, an aluminum or CNC machined ring might suit you better. For most mountain applications where longevity and predictable shifting matter more than grams, this Truvativ chainring is a smart, cost‑effective choice.

Key Features

  • ✓ 22-tooth inner chainring optimized for low gearing on steep climbs
  • ✓ 64mm BCD, 4-bolt pattern — fits many MTB triple cranks
  • ✓ Steel construction for high wear resistance and toughness
  • ✓ 9-speed tooth profile tuned for reliable shifting with 9-speed chains
  • ✓ Matte black corrosion-resistant finish for longer life
  • ✓ OEM-compatible: SRAM model ID CR-MLEG-64-A1 / Part #11.6215.064.000
  • ✓ Light shipping weight — compact, easy to carry as a spare

Specifications

BCD 64
Chainring Bolts 4
Chainring Comp. MTB triple
Teeth 22
Material Steel
Position Inner
Primary Color Black
Speed 9

Product Identifiers

Vendor Item # 11.6215.064.000
UPC 710845409059

Frequently Asked Questions

Will this chainring fit my crankset?

This ring fits cranksets that accept a 64mm (4-bolt) inner BCD chainring and are set up for a 9-speed triple. Check your crank's bolt circle diameter and confirm it uses a 4-bolt inner ring. If unsure, compare the part number (11.6215.064.000) or SRAM model ID CR-MLEG-64-A1 with your OEM specifications.

Can I use this ring with an 8- or 10-speed chain?

It's designed for 9-speed drivetrains and will perform best with a 9-speed chain. An 8-speed chain is wider and may not shift as crisply, while a 10-speed chain is narrower and may increase wear or cause less reliable engagement. For optimal shifting and longevity, match the ring to a 9-speed chain.

Is the steel construction heavy or prone to corrosion?

Steel is heavier than aluminum but offers excellent toughness and wear resistance. This ring includes a black corrosion-resistant finish to limit rust; regular cleaning and lubrication will further protect it. For riders who need minimal weight, consider alloy alternatives, but expect shorter life under heavy use.

How do I install the inner chainring?

Install using the correct length chainring bolts and torque to your crank manufacturer's specification, typically 8–10 Nm for many cranks — check your crank manual. Ensure the shifting ramps/markings (if present) face the correct direction and that the chainline is correct for smooth shifting.

Can I replace only the inner ring without changing the middle/outer rings?

Yes — replacing just the inner ring is common. However, for best shifting performance ensure teeth profiles and wear levels between rings are compatible; mixing a brand-new inner with heavily worn outer/middle rings can sometimes reduce shift quality.

What is the manufacturer part number and model ID for reference?

The Truvativ manufacturer part number is 11.6215.064.000 and the SRAM model ID is CR-MLEG-64-A1. Use these when verifying compatibility or ordering replacement parts to ensure a correct match.

Buying Guide

When selecting an inner chainring for a triple mountain crank, prioritize correct BCD, speed compatibility, and material based on your riding style. Steel rings like this Truvativ 22T are ideal if you want durability and predictable wear under heavy use; aluminum rings save weight but may wear faster. Always confirm the crank's bolt circle diameter (64mm for this ring), that your drivetrain uses 9 speeds, and that you have the correct bolt length for stacked chainrings. If you chase precise shifting and low weight for competition, consider higher-end matched sets; for reliable, cost-effective replacements, a steel inner ring is a practical choice.

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