Motorcycle Shock Gas Bladder End Caps

Shock Bladder Caps

Motorbikes with piggyback-style shock absorbers sometimes use an internal floating piston (IFP) to separate oil and nitrogen, but more commonly a rubber bladder reservoir holds the gas separately. This heavy duty balloon is less prone to leaking than piston seals, so most OEM rear dampers use them in the piggyback chamber — learn more about shock layouts. The bladders use sealing alloy end caps that keep dirt out, resist stone strikes and help dissipate heat, usually retained with a retaining c-clip. We stock a wide range of bladder and cap upgrades, high capacity kits, shorter caps for clearance and conversion kits for IFP shocks. All caps feature air ports for regassing — some use a rubber bung, others schrader valves — and our gassing tools make nitrogen charging straightforward. We also carry seals, o-rings and setup advice in our technical guides.

Protective alloy end caps for piggyback bladder reservoirs

• Seal bladder reservoirs to keep oil and nitrogen separate
• Resist stone strikes, keep dirt out and help dissipate heat
• Air ports allow regassing via pierced bung or schrader valve
• Compatible with retaining c-clips, high capacity kits and conversion mods

Recommended Pairings

Consider matching caps with Suspension Tools for rebuilding and regassing your shocks.

Shop Shock Bladder Caps

Browse our range of bladder caps, bladders, c-clips and gassing tools to suit service and upgrade projects.