Description
The S&S Cycle 865 Big Bore Kit transforms your 650cc Royal Enfield into a genuine performance machine, delivering the displacement and power output you’ve been seeking without sacrificing reliability. By increasing bore diameter and optimizing the combustion chamber, this kit unlocks meaningful gains in torque and horsepower while maintaining the stock engine’s proven durability. Whether you’re building a custom cruiser or upgrading a daily rider, this is the foundational upgrade that makes every other modification worthwhile.
- Displacement: 865cc
- Manufacturer: S&S Cycle
- Part Number: 920-0145
- Platform: Royal Enfield 650
- Type: Big bore kit
- Material: Precision-forged internals
- Installation: Professional fabrication recommended
- Includes: Oversized pistons, rings, gaskets
- Fitment: Royal Enfield 650 RE specific
- Horsepower increase: Approximate 15%+
- Torque increase: Approximate 12%+
- CNC-engineered components: Yes
- Quality standard: OEM-equivalent tolerances
