MOUNTAIN BIKE 4-PISTON DISC BRAKE PISTON SERVICE BLOCK

Piston block for servicing hydraulic, 4-piston brake calipers

Remove brake pads and push pistons back into bore.

Insert this block and pump the brake to push out a single piston for cleaning. 

Designed around Shimano calipers, but I have used on many different brands and models. 

Designed for personal use, but may update designs to fit other brands in the future.

IYKYK