Keep winning.


One dropped chain is one too many.

Eliminate dropped chains forever, so you can ride without interruption.

Features

FOREFRONT

The “Forefront” feature allows for 4-way, front-accessible setup and adjustment. This broad adjustability makes installation less “trial-and-error” and more “set-and-forget.”

POP-UP

The “Pop-Up” feature allows for tool-free chain access - simplifying installation and drivetrain maintenance. The guide pops-up and snaps shut with satisfying and secure clicks.

Tech Specs

+ Compatibility and Model Info

  • Chainring Range: Accommodates 28-38t rings.*
  • Drivetrain Compatibilty: Internally shaped to accomodate even super-wide ratio cassettes and wide chainlines.
  • Mounting Options: ISCG-05 and BB-mount (works with threaded Shimano, SRAM, and RF BBs)
  • NEW iO Version: Integrates with SRAM Transmission cranks featuring bashguards. Available in SL (alloy) and SLR (carbon) versions, both of which work with all bashguard sizes.

*CS model accommodates 28-38t rings.

+ Aesthetics

  • Backplate never extends above upper guide – for a better look and reduced risk of frame interference.
  • Upper guide 26% smaller than older upper guide for more discreet aesthetics.

+ Backplate Material Options

Composite (CS), alloy (SL), and carbon (SLR)

*CS does not feature the redesigned upper guide with 4-way adjustment and tool-free pop-up.

+ Weight

CS composite: 32 g

Alloy SL: 37-40g

Carbon SLR: 31 g


Model Comparison

CS

Alloy SL

Carbon SLR

Compatible Chainring Sizes:

28-34t (26-32t oval)

28-38t (26-36t oval)

28-38t (26-36t oval)

Forefront adjustment system:

Composite

Aluminum

Carbon Fiber

Pop-Up tool-free chain access:

No

Yes

Yes

Backplate Material:

No

Yes

Yes

Weight:

32 g

37-40 g

31 g