S&S Cycle 4" Sidewinder Big Bore Kit for 1999-'06 HD Big Twin Models - Silver 910-0642
Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. Bolt-in kits do not require machining, rebalancing or engine removal, and include just about everything youll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining!
Features & Benefits
- Low friction Ductile Cast Iron liner
- 10.5:1 Compression
- Bolts in. No machining, balancing, or splitting the crankcases
- 88" engines are boosted to 100"
- Complete kits include cylinders, pistons, gaskets, and instructions
- Wrinkle black cylinders matches stock finish
- Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates
| Stroke | Bore | Cylinder Length | Piston Type | Dome Volume | 83cc CNC Heads | 85cc Stock Heads | 89cc S&SHeads |
| 4 | 4.00" | 4.937" | Forged | 8.75 pop up | 10.8:1 | 10.5:1 | 10.1:1 |
*Not compatible with S&S79cc Super Stock heads
Manufacturer: S&S Cycle
Part Number: 910-0642
Instructions Sheets:
Instructions Sheet (CLICK HERE)
Instructions Sheet 2 (CLICK HERE)
S&S Cycle 4" Sidewinder Big Bore Kit for 1999-'06 HD Big Twin Models - Silver 910-0642
- Brand: S&S Cycle
- Product Code: 910-0642
- Availability: Special Order
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$1,594.95
Tags: S&S Cycle, Engine Components