LEWIS ALU 8-Bolt Aluminum MTB Chainring for SRAM 8-Bolt Mount

Fit Notes

• For 1X drivetrains only.
• Does not work with SRAM AXS or Transmission drivetrains.
• Does not work with Shimano 11-speed and above.

The LEWIS ALU 8-Bolt gives a SRAM 8-bolt crank a hard-anodized 7075 aluminum ring from 30T to 36T, so you can gear down for long climbs or up for faster trails. Check the mount, then the offset, then the tooth count, because each one narrows the next.

Confirming Your Crank Takes an 8-Bolt Ring

This ring is for SRAM 8-bolt cranks, and no other mount pattern is covered. Pull your current ring or check your crank's documentation, count the bolts and confirm the style before you think about sizes.

Working Out 3mm, 6mm or 0mm Offset

As general guidance, offset moves the ring in or out and sets your chainline, so the right value depends on your crank, frame spacing and cassette. Note which offset your current ring uses and how the chain runs across the cassette, then move away from that value only with a clear reason.

Picking Between 30T, 32T, 34T and 36T

A smaller ring such as 30T makes climbing easier, while a bigger ring gives you more speed before you spin out. The 36T comes only at 0mm offset; 30T, 32T and 34T come at 3mm or 6mm, so work out the exact pair and ask which size is supplied before ordering.

• Count the bolts on your crank to confirm the SRAM 8-bolt mount.
• Write down the offset of your current ring: 3mm, 6mm or 0mm.
• Lean toward 30T or 32T for climbing, 34T or 36T for faster terrain.
• Check your chain and have bolts ready, since chain compatibility and included hardware are not stated.
• Watch chain engagement on the positive and negative tooth design during your first shifts.

A hollow support structure keeps this CNC machine cut 7075 aluminum ring light, and its hard-anodized coating is stated as three times harder than standard anodizing. Once mount and offset are settled, fit it with clean threads and even, careful tightening around all eight bolts.

Technology

CNC Machine Cut 7075 Aluminum

Smooth Crafted Surface and High precision made

SRAM 8-Bolt Style

Support SRAM 8-bolt crank

Hard Anodized Wear-Resistant Coating

Hard-anodized coating, three times harder than standard anodizing

Positive and Negative Tooth Design

Consider chainrings with a positive and negative tooth design for better chain engagement, contributing to smooth and rapid gear changes.

Lightweight Hollow Design

Lightweight while maximizing the strength of the toothed plate, making it suitable for more intense riding situations.

Specifications