Bluegrass Solid D3O Knee Pads - Black X-Large CheckoutSpec= 21H The precision of the derailleur

The precision of the derailleur motor allows the chain to move not only immediately but also extremely fluidly on the chainrings even under maximum load

Sram Transmission 70 and 90 cranks

Spring fitment help https://tech

Backing Plate Material Steel Compound Resin Pad Shape Number 19 Designed for ebike Yes

Bluegrass Solid D3O Knee Pads - Black X-Large CheckoutSpec= 21H The precision of the derailleurThe Bluegrass Solid D3O knee pads are enhanced with D3O shells and extra soft pads at the sides to enhance protection and comfort. Built for the hardest lines we used breathable and durable fabrics such as Air Mesh and Kevlar for the construction. D3O Technology Protectors compliant with EN 1621 1 Level 1 Side soft pads Extended sleeve Silicone grippers Top and bottom straps Zip closure Strong durable Kevlar fabric Breathable Air Mesh fabric Gender