Big Bore 900 Kit for Patriot 850 // SKU: 09-311
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
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Big Bore Kit – Outright Purchase
No core exchange or wait time required. This package is sold as a 100% outright purchase, meaning you receive a brand-new, complete kit to keep—no need to send in your original parts or pay a separate core deposit.
What’s Included:
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Complete Big Bore Cylinder Assembly
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Performance Piston Kit (Piston, Rings, Wrist Pin, & Circlips)
- Exhaust Valve Assembly
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Base Gasket and Y-pipe gasket
- Billet Head with your choice of domes for fuel
- Ceramic Y pipe
Key Features:
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No Core Returned: Keep your stock setup for back-to-original flexibility.
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Direct Bolt-On: Engineered to dro
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