RedShift Sports Replacement Spring Kit - Fits 27.2mm ShockStop Endurance SeatPost +25% Stiffness MFPN=44030070 built-in downtube storage

built-in downtube storage

SyncDrive Pro mid-drive motor (up to 360% support)

Removes these sealed bearing sizes: 608 609 6000 6001

Shifters: Shimano GRX ST-RX400 Disc

this wax has a higher biodegradability and biodegradable/compostable packaging

RedShift Sports Replacement Spring Kit - Fits 27.2mm ShockStop Endurance SeatPost +25% Stiffness MFPN=44030070 built-in downtube storageReplacement springs are an ideal upgrade if you need a bit more stiffness from your ShockStop Suspension Seatpost. The stiffer springs provide a more topped out feel or if you're at the upper end of the weight range and want more support. Approximately 25% more stiffness than the standard spring set Includes two steel springs (one outer and one inner spring) Only compatible with the 27. 2mm diameter versions of the ShockStop Endurance Seatpost (both