Truvativ 9 Speed Alloy 64mm BCD
Truvativ

Truvativ 9 Speed Alloy 64mm BCD

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OEM Truvativ 26T inner chainring for 9-speed MTB triples — 64mm BCD, 4-bolt aluminum construction in black. Lightweight, durable replacement for SRAM/Truvativ cranks.

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Product Details

Overview & Technology

Truvativ's 26T 9-speed alloy inner chainring is a factory replacement designed for MTB triple cranksets that use a 64mm, 4-bolt BCD. Machined from precision aluminum and finished in black anodize, this inner ring balances low weight with the strength needed for off-road riding and frequent shifting. This ring is built to work with 9-speed chains and follows SRAM/Truvativ geometry (SRAM Model ID: CR-MLEG-64-A1, MPN 11.6215.092.000). Because it's the inner ring, ramps and shift gates are tuned for fast, reliable downshifts under load — exactly what you need when climbing technical terrain or escaping a jammed line.

Key Features

Lightweight aluminum construction: Forged/machined alloy provides a strong but light platform that resists deformation from pedal strikes and regular use. The black anodized finish protects the metal and reduces visual wear. • 26 teeth: Low gearing ideal for steep climbs and technical sections. • 64mm BCD, 4-bolt: OEM fit for many Truvativ/SRAM triple cranks. • 9-speed specific: Tooth thickness and shaping optimized for reliable 9-speed chain engagement and shifting.

Fit & Compatibility

This inner chainring is specifically made for MTB triple cranksets that accept a 64mm, 4-bolt BCD inner ring. It is an OEM Truvativ/SRAM part (SRAM Model ID: CR-MLEG-64-A1, Part #11.6215.092.000), so it’s a direct replacement for compatible Truvativ cranks and many older SRAM/compatible triple systems that share the 64mm BCD standard. Compatibility notes: Designed for 9-speed drivetrains — using a 10-speed chain may work in a pinch but shifting performance is optimized for 9-speed chains. Not suitable for narrow-wide single-ring setups or direct-mount cranks. Always verify your crank's BCD and bolt pattern before purchase.

Who It's For

This chainring is aimed at mountain riders who run a triple drivetrain and need a dependable low (inner) ring for steep climbs, bikepacking ascents, or technical trail sections. It's a great OEM replacement for riders who prefer the proven performance of traditional triple setups over modern 1x conversions. It's also useful for workshop mechanics and DIY cyclists maintaining older or budget MTBs with 9-speed triple drivetrains — offering reliable shifting, straightforward installation, and an affordable OEM-level replacement option.

Key Features

  • ✓ 26-tooth inner ring optimized for steep climbs and low gearing
  • ✓ 64mm 4-bolt BCD fits Truvativ/SRAM triple cranksets
  • ✓ Machined aluminum construction with black anodized finish
  • ✓ Engineered specifically for 9-speed chain thickness and shifting
  • ✓ OEM Truvativ part (SRAM Model ID CR-MLEG-64-A1, MPN 11.6215.092.000)
  • ✓ Lightweight at ~0.1 lb for minimal rotating mass

Specifications

BCD 64
Chainring Bolts 4
Chainring Comp. MTB triple
Teeth 26
Material Aluminum
Position Inner
Primary Color Black
Speed 9

Product Identifiers

Vendor Item # 11.6215.092.000
UPC 710845413827

Frequently Asked Questions

Will this chainring fit my crankset?

This ring fits cranksets that use a 64mm, 4-bolt BCD inner chainring and are designed for MTB triples. Confirm your crank's BCD and bolt pattern — if your crank uses a 64mm BCD and a 4-bolt layout, this Truvativ OEM ring will fit.

Can I use a 10-speed or 11-speed chain with this 9-speed ring?

The ring is optimized for 9-speed chains; a 10-speed chain may physically fit but shifting and chain retention may be compromised. For best performance, match the chainring to the intended chain speed or consult a mechanic before mixing speeds.

Is this ring compatible with narrow-wide or 1x conversions?

No. This is an inner ring designed for triple drivetrains with conventional tooth profiles and shift ramps. Narrow-wide rings and 1x conversions require purpose-built single-ring components for reliable chain retention.

How durable is the aluminum construction?

The chainring is machined from aluminum and anodized for corrosion resistance. While lighter than steel, alloy rings offer a good balance of strength and weight for trail use; avoid heavy repeated pedal strikes on rock to prevent bending or nicking.

What tools and torque should I use for installation?

Use the correct 4-bolt chainring bolts and a compatible hex or torque driver. Torque specs vary by crank manufacturer; follow the crankmaker's recommended torque for chainring bolts and inspect bolts after the first few rides. If unsure, have a pro mechanic install it.

Is this an OEM replacement part?

Yes — this is a Truvativ OEM replacement (MPN 11.6215.092.000) that matches the original geometry used on compatible Truvativ/SRAM triple cranks.

Buying Guide

When buying an inner chainring for a triple MTB crank, the two critical measurements are teeth count and BCD. This Truvativ 26T ring uses a 64mm 4-bolt BCD — match that to your crank spider. Also confirm drivetrain speed: the tooth profile here is cut for 9-speed chains, so matching chain width will deliver the best shifting. Consider whether you want to retain a triple drivetrain or convert to 1x. For riders keeping a triple, an OEM replacement like this preserves original shifting geometry at an affordable price. If you’re converting to 1x, look for dedicated narrow-wide rings and a compatible chain retention solution instead.

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