SRAM

SRAM Chainring 4 Bolts

Name: SRAM Chainring 4 Bolts
Brand: SRAM
SKU: 390607
Rating: 3.3 (1 reviews)

In Stock

Lightweight SRAM 36T middle chainring for 10-speed drivetrains — 104mm BCD, 4-bolt with integrated pour bashguard for reliable chain retention and protection. Ideal as a direct replacement for compatible SRAM NO-PIN setups.

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Available Options

Option	Price	Availability
SRAM, 36T, 10 sp, BCD 104mm, 4-Bolt, Pour bashguard, Middle Chainring, For NO-PIN, Aluminum, Black, 11.6215.188.410	—	In Stock
SRAM, 38T, 10 sp, BCD 104mm, 4-Bolt, Pour bashguard, Middle Chainring, For NO-PIN, Aluminum, Black, 11.6215.188.420	—	In Stock
SRAM, 36T, 10 sp, BCD 104mm, 4-Bolt, Outer Chainring, For L-pin GXP, Aluminum, Black, 11.6215.188.430	—	In Stock
SRAM, 38T, 10 sp, BCD 104mm, 4-Bolt, Outer Chainring, For L-pin GXP, Aluminum, Black, 11.6215.188.440	—	In Stock

Product Details

Overview & Technology

SRAM 36T Middle Chainring (Model CR-MLEG-104-A1, MPN 11.6215.188.410) is a 10-speed, 4-bolt chainring built for riders who need a durable, lightweight replacement for SRAM NO-PIN cranksets. The 104mm BCD bolt circle and 36-tooth count make this ring a common fit for triple and some compact crank configurations used on off-road and mixed-terrain mountain bikes. Construction: manufactured from precision-machined aluminum and finished in matte black, this chainring pairs a slim, low-weight profile with a poured-on bashguard lip. The pour-style bashguard adds edge protection against rocks and roots while preserving consistent chain engagement across the middle ring’s tooth profile.

Key Features & Benefits

Designed for dependable performance: the 4-bolt 104 BCD interface keeps installation simple and secure, while the 10-speed tooth profile is shaped for smooth shifting and reliable chain retention on SRAM NO-PIN systems. The pour bashguard reduces wear on the ring edge and helps prevent chain drops in rough terrain. • 10-speed compatibility: optimized tooth spacing for clean indexing and quieter shifting. • Pour bashguard: integrated protective lip absorbs scuffs and deflects impacts. • Aluminum construction: lightweight and stiff for efficient power transfer.

Fit, Compatibility & Installation

This chainring uses a 104mm BCD and 4-bolt mounting pattern — confirm your crank spider matches this BCD and bolt count before purchase. The listed part is the middle ring for NO-PIN-type SRAM 10-speed triple cranksets; SRAM also offers matching outer and alternate tooth-count variants for GXP and L-pin systems. Available variants include 36T and 38T middle rings (NO-PIN) and corresponding 36T/38T outer rings for L-pin GXP setups. Weight and shipping size are compact (approx. 0.21 lb, shipping dims 7" x 7" x 0.2"). When installing, torque bolts to manufacturer spec and use anti-seize or threadlocker as appropriate for your crank system.

Who This Chainring Is For

This 36T SRAM middle chainring is aimed at mountain and mixed-terrain riders using older or current SRAM 10-speed triple cranksets with a 104 BCD and NO-PIN mounting. It's a practical replacement for riders who need a durable, light spare that restores crisp shifting and adds a bit of bash protection. If you run a double-only setup, modern narrow-wide single rings, or an 11/12-speed drivetrain, check compatibility carefully — this part is specifically profiled for 10-speed NO-PIN systems and works best in its intended triple-chainring role.

Key Features

✓ 36-tooth middle ring optimized for 10-speed SRAM drivetrains
✓ 104mm BCD 4-bolt pattern for direct-fit crank compatibility
✓ Precision-machined aluminum construction for stiffness and low weight
✓ Integrated pour-style bashguard for edge protection
✓ Specifically profiled for NO-PIN SRAM triple crank systems
✓ Lightweight replacement — approximately 0.21 lb shipping weight
✓ Available in matching 38T middle and outer ring variants
✓ Black finish blends with modern SRAM crank aesthetics

Specifications

BCD	104
Chainring Bolts	4
Chainring Comp.	NO-PIN
Teeth	36
Material	Aluminum
Position	Middle
Primary Color	Black
Speed	10

Product Identifiers

Vendor Item #	11.6215.188.410
UPC	710845701658

Frequently Asked Questions

Will this chainring fit my crankset?

This ring fits cranksets with a 104mm BCD and a 4-bolt mounting pattern designed for SRAM NO-PIN 10-speed middle rings. Confirm your crank spider uses a 104 BCD and that your setup is a 10-speed triple before purchasing.

Can I use this chainring on an 11- or 12-speed drivetrain?

It's profiled specifically for 10-speed chain spacing and may not shift optimally on 11- or 12-speed systems. For best shift performance, choose a chainring matched to your drivetrain speed.

What's a pour bashguard and why does it matter?

A pour bashguard is a molded protective lip attached to the ring’s edge that absorbs impacts and prevents premature wear. On trails it reduces nicks and helps deflect hits from rocks and roots, extending ring life.

Do I need special bolts to install this chainring?

No special bolts are required beyond the correct length and type for your crank. Use bolts that match your crank’s spec and torque to manufacturer recommendations. For NO-PIN systems use the supplied or OEM-compatible fasteners.

How do I choose between 36T and 38T middle rings?

Choose based on desired gearing: a 36T gives easier climbing gears with lower top-end speed, while a 38T raises rolling speed at the expense of a slightly harder gear for steep climbs. Match tooth count to your riding terrain and cassette range.

Can I mix this middle ring with an outer ring for GXP L-pin?

No — the middle NO-PIN ring is made for NO-PIN crank systems. If your crank uses L-pin GXP outer rings, select the corresponding outer chainring variant designed for GXP and L-pin compatibility.

Buying Guide

Choosing the right replacement chainring starts with measuring BCD and matching your drivetrain speed. For SRAM 10-speed triple systems the 104 BCD 4-bolt pattern is common — confirm bolt circle and whether your crank uses NO-PIN or L-pin fastening. Pick a tooth count that suits your terrain: lower tooth counts help climbing, higher counts increase top speed. Material and construction matter: aluminum chainrings balance weight and durability, while a pour-style bashguard delivers extra protection on rocky trails. If you’re unsure, bring your current ring or crank model number (or photo) to verify fit, or match the manufacturer part number for an exact replacement.

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