The only exception for 9-speed groupsets is pre-1997 Dura-Ace gearing, which won’t play nicely with anything because it uses a totally different cable pull ratio The good news is there’s some reverse compatibility between version three 11-speed EPS components and older generations. What cage length derailleur should I buy?

Although SRAM, Shimano and Campagnolo’s interpretations of a clutch derailleur differ slightly, they all aim to achieve the same thing. Campagnolo provides a much more thorough description of the changes and we highly recommend you read through this guide carefully before committing to any new parts from the Italian marque. Compatible parts are now marked by a letter surrounded by a square box – simply put, if all of your components have the same stamped letter on them, they’ll work together. Finance is subject to application, financial circumstances and borrowing history. Performance Cycling Limited FRN: 720557 trading as Tredz are authorised and regulated by the Financial Conduct Authority. We are a credit broker not a lender – credit is subject to status and affordability and is provided by Mitsubishi HC Capital UK PLC. Terms & Conditions Apply.

Campagnolo’s Super Record EPS electronic groupset is on version four now and has gone 12-speed. Again, it’s a system unto itself, with its own electronics to communicate between the shifters and the rear derailleur. Now that we’ve gone through the tortuous process of working out exactly what will work with your drivetrain, you have the fun of deciding which price point to go for.

and 11-speed SRAM road components are inter-compatible – meaning you could run a 10-speed SRAM Red rear derailleur with a pair of SRAM 22 shifters While the derailleurs will work, chainlines differ between GRX, Shimano’s road groupsets and its mountain bike groupsets. Current 9-speed Shimano mountain bike components are compatible with older 9-speed road and mountain bike components, excluding the aforementioned exception a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model.speed SRAM components are inter-compatible, regardless of whether they are road or mountain bike parts – for example, you could run road shifters with a mountain bike rear derailleur Regular rear derailleurs rely solely on the tension provided by the main pivot to keep the chain in place. Campagnolo has introduced many changes to its groupsets, resulting in reduced compatibility between generations. So boxed letters (indicating the ranges) will aid you in identifying if your parts are compatible. Campagnolo Dura-Ace 7970 and Ultegra 6770 Di2 10-speed components are not compatible with each other. This is because they use different wires, with the Ultegra variant using the SD50 type that would go onto be used on 11-speed.

and 9-speed SRAM components are all inter-compatible, regardless of whether they are road or mountain bike parts Campagnolo’s Super Record EPS electronic groupset is now onto its fourth generation. Matthew Loveridge / Immediate MediaMost* 8- and 9-speed Shimano mountain bike and road kit is inter-compatible because they both use the same cable pull ratio. This means you can use an 8- or 9-speed mountain bike derailleur with road shifters, or vice versa If you wish to return your bike to us please keep it in the box it arrived in and call us on 01772 644340 and we will arrange a collection. A clutch derailleur essentially increases the resistance this pivot provides – either through a clutch or more complex electro-hydraulic systems, as seen on SRAM AXS – resisting fore and aft movement of the derailleur cage, and making for a far quieter and more reliable drivetrain.

Top normal spring uses the spring to select higher gears, best suited to use with Rapidfire shifters

The main difference you’ll find between road bike and MBT derailleur is the length of the rear derailleur component. Mountain bikes have lower and wider spaced gears usually and this means the rear derailleur needs to be able to handle a bigger span in change length than standard road bike derailleur Bike Derailleurs at Decathlon