Want to service your Mech? Damaged your cage in a crash? You can buy sections of the Mech here to rejuvenate and repair your existing derailleur. Every part of the Mech can be serviced using a multitool and we have designed the wear parts to be serviceable and replaceable.
Cages
From our experience cages are the most vulnerable part of a derailleur. Depending on the cassette you are using you’ll want the Short or Long cage.
- 46T maximum cassette – Short Cage
- 52T maximum cassette – Long Cage
The cage can be removed with one T25 screw.
Cages come with new jockey wheels, running on stainless bearings. They are a drop in replacement for your previous cage.
B Knuckle
The B Knuckle is well protected but we all know anything can happen when you are out on a ride. We wanted to make sure that no matter what you can keep your Mech going. The B Knuckle includes:
- Nylon B Knuckle pre-fitted with limit screws, pivot pins and barrel adjuster
- Ratio Mech nameplate
- Mounting screws
- Linkage spring
P Knuckle
The P Knuckle houses a wrap spring clutch and is the point that the cage is mounted to the derailleur. If you’ve serviced your clutch a few times and it’s now ready for a refresh then this is the part to change. The P Knuckle includes:
- Nylon P Knuckle housing with pivot pins
- Pre-installed wrap spring clutch
- Cage screw for re-mounting a Short or Long cage
Direct Mount arms
The Direct Mount arms allow the Ratio Mech to be mounted to a SRAM* UDH compatible frame. The Mech can be used in this configuration with any compatible cassette. There is a measurable stiffness increase over using a derailleur hanger. The Direct Mount arms includes:
- Pre-assembled direct mount arms with all necessary hardware for installation
Hanger arms
If you don’t have a UDH compatible frame yet then you should install hanger arms to your Mech.
- Pre-assembled hanger arm with all necessary hardware for installation
Links
The Mech’s links come as a set of four. The inner link pair sit in-board closest to the cassette. The outer links sit out-board. The links have stainless bearings pre-installed and replacing them will give your derailleur a new lease of life if you’ve be riding many miles in foul conditions.
Links include:
- Pair of inner and pair of outer links with pre-installed stainless bearings
- Link spacers
- Link screws
Cable Fins
If you already have a Mech and would like to change your shifter and/or cassette then you can buy alternative fins. Please check our compatibility page for options.
All products we offer for sale on our website are Ratio Technology products unless stated otherwise. All third-party products, company names and logos remain the property of their respective holders and use of them does not imply any affiliation with or endorsement by them.
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* Ratio Technology Limited is not in any way affiliated with, sponsored or endorsed by SRAM, LLC or Shimano Inc.
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