The revolutionary Progressive springs fit shocks of any length with 50 - 65mm of stroke. Progressive springs increase ending-stroke support by approximately 20% over linear coil springs - allowing them to be used on frames previously requiring the progressive nature of air suspension.
To work out which spring rate you need please use our spring calculator by clicking here.
Please note for use on non-MRP brands you will need a spring spacer kit due to the inner diameter of the spring, they can be found in the table below
|Shock Brand / ID||Spacers Required|
|EXT / 38mm||No Spacer Required|
|MRP / 38mm||No Spacer Required|
|Rockshox / 38mm||No Spacer Required|
|Ohlins / 36mm||✔ - 38mm-36mm|
|Cane Creek / 36mm||✔ - 38mm-36mm|
|Fox/2019+ Marzocchi / 35mm||✔ - 38mm-35mm|
|BOS / 36mm||✔ - 38mm-36mm|
For other brands please measure the OD of the spring seating surface, if in doubt please contact us HERE
Rockshox Super Deluxe Ultimate
Rockshox Super Deluxe Ultimate DH
Using WPS Performance Spring Adaptors these springs can be fitted to 36mm OD Shocks.
Cane Creek Kitsuma
Cane Creek IL G2 Coil
Using WPS Performance Spring Adaptors these springs can be fitted to 35mm OD Shocks.