The seals inside the master cylinder build and hold brake pressure. As they swell or harden with age, the lever turns spongy or slowly sinks toward the bar while braking fades. This kit reseals the cylinder and restores a firm lever and reliable pressure. Confirm your bore size before ordering so the seals match.

Replaces OEM #45530-MA4-671

• Reseals the master cylinder
• Cures a spongy or sinking lever
• Confirm bore size before ordering

Fits

• 1990-2002 Honda ST1100
• 1992-1995 Honda ST1100A
• 1994-1995 Honda CB1000