# S&S Cycle Royal Enfield 650 Twins 865cc Big Bore Kit

The S&S Big Bore kit for Royal Enfield® 650 Twins includes cylinders, pistons and a head gasket.

-   Bore X Stroke 90 x 67.8mm, Compression ratio 11.0:1

## Details

- **Price:** 1237.29 CAD
- **Vendor:** S&S Cycle
- **Type:** Piston Sets - Powersports

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1237.29 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-royal-enfield-650-twins-865cc-big-bore-kit)
> Updated: 2026-09-08