Bolt Exhaust Hardware Kit EU.EX.65-85CC - KTM / Husqvarna / Gas Gas 65cc-105cc 2002-2026

Product Description

The Bolt Exhaust Hardware Kit provides the critical sealing and mounting components required to service the expansion chamber and silencer junction on mini motocross machines. Engineered specifically for high-revving 65cc to 105cc two-stroke engines across KTM, Husqvarna, and GasGas platforms, this complete kit prevents exhaust spooge and pressure loss at the manifold and mid-pipe connections.

Each kit includes model-specific high-temperature green Viton rubber exhaust pipe O-rings designed to maintain elasticity under severe combustion heat. Paired with a heavy-duty pipe-to-silencer rubber coupler and heat-treated swivel exhaust pipe springs, this hardware pack restores a tight exhaust seal to maintain proper cylinder backpressure and prevent power-robbing exhaust leaks.

Top Features: Bolt Exhaust Hardware Kit

• Includes model-specific high-temperature green Viton rubber exhaust pipe O-rings.
• Supplied with a durable pipe-to-silencer coupler sleeve to eliminate mid-pipe joint leaks.
• Contains high-tensile exhaust pipe swivel springs designed for secure pipe retention.
• Delivers all necessary hardware to reseal the expansion chamber during top-end maintenance or pipe replacement.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: What components are included in this Bolt hardware kit?
A: The kit contains model-specific green Viton rubber pipe O-rings, a pipe-to-silencer coupler sleeve, and exhaust pipe retention springs.

Q: Why are Viton rubber O-rings preferred for two-stroke exhaust manifolds?
A: Viton rubber provides superior resistance to extreme heat, unburned fuel, and two-stroke pre-mix oil compared to standard nitrile rubber, ensuring the cylinder manifold stays sealed without hardening or failing.

Expert Pro-Tip: Thoroughly scrape carbon buildup out of the cylinder exhaust spigot grooves before rolling on the new Viton O-rings. Coat the O-rings and the inside of the silencer coupler with high-temp copper silicone or hi-temp grease during assembly—it helps the pipe slip on smoothly without pinching the rubber and creates an airtight seal against unburned pre-mix spooge.

Recommended Pairings:

• KTM 85 SX Performance Parts & Upgrades
• Husqvarna TC 85 Performance Parts & Upgrades
• GasGas MC 85 Performance Parts & Upgrades

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