Seals and pistons

Replacement seal for HOPE brake calipers. Replacement part number HBSP068. This seal is compatible with HOPE TR4, E4, V4, RX4+ (DOT), Mono M4, and XC4 brake calipers. The seal is designed for DOT 5.1 brake fluid (or DOT 4). This seal is suitable if you are planning to reseal a HOPE brake caliper.

Replacement seal for HOPE brake caliper bleed screw. Small o-ring measuring 4x1.5mm, used to seal the HOPE bleed screw located on HOPE brake calipers. The small o-ring is made of hard rubber designed for DOT 4 or DOT 5.1 brake fluids. If your o-ring is worn out or has started to leak fluid,...

Replacement rubber cap for HOPE caliper bleed screw, part number HBSP240. The cap is primarily used to keep debris out of the brake caliper hydraulic system. The cap keeps the bleed screw free of dust, mud, and other debris that could settle in its cavity. This makes it very easy to bleed the...

Replacement seal for HOPE brake calipers. Replacement part number HBSP299. This seal is compatible with HOPE GR4, V4 brake calipers. The seal is designed for DOT 5.1 brake fluid (or DOT 4). This seal is suitable if you are planning to reseal a HOPE brake caliper.

HOPE Trial Zone brake caliper piston seal, HOPE spare part designation = HBSP207. This seal is compatible with the HOPE Trial Zone brake caliper. The seal is designed for DOT 4 or DOT 5.1 brake fluids. The inner diameter of the seal is 25 mm. If you are planning to reseal the HOPE Trial Zone...

Replacement piston for HOPE TR4, E4, V4, RX4+, Mono M4 brake calipers, 16 mm, phenolic. HOPE spare part number = HBSP136. The piston is made of hardened plastic - phenolic. The piston can be used for DOT 4 and 5.1 brake fluid, but also for mineral oil. Ideal if your piston has worn out and the...

Piston for HOPE Trial Zone and Mono Trial brake calipers. The piston is made of aluminum alloy and is hollow to reduce weight. In the center, the HOPE Trial Zone brake caliper piston is equipped with a magnet to which the brake pads attach without the need for a spacer spring between the pads....

Replacement piston for HOPE GR4, V4 brake calipers, 18 mm, stainless steel + phenolic. HOPE spare part number = HBSP433. The piston is made of a stainless steel outer shell and hardened plastic (phenolic) inner shell. The piston can be used with DOT 4 and 5.1 brake fluid, as well as mineral oil....

Replacement piston for HOPE TR4, E4, V4, RX4+, Mono M4 brake calipers, 16 mm, stainless steel + phenolic. HOPE spare part number = HBSP432. The piston is made of a stainless steel outer shell and hardened plastic (phenolic) inner shell. The piston can be used with DOT 4 and 5.1 brake fluid, as...

Seal for the Bore Cap of the HOPE Trial Zone brake caliper piston. This seal is designed to seal the Bore Cap that covers the brake caliper piston. The seal is made of solid rubber, which is designed for DOT 4 and DOT 5.1 brake fluids. It is an O-ring that is inserted into the caliper body where...

Replacement seal for the piston Bore Cap of the HOPE TR4, E4, V4, RX4+ (DOT), Mono M4 brake caliper. This is an O-ring designed for DOT brake fluids such as DOT 4 or DOT 5.1. The seal is used to seal the outer nut of the HOPE brake caliper piston. HOPE spare part number = HBSP140.