4893M07900 Wiseco Std Piston Kit 79.00mm 12.5:1 CR for Yamaha RS Vector 2005-200
4893M07900 Wiseco Std Piston Kit 79.00mm 12.5:1 CR for Yamaha RS Vector 2005-200
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Std Piston Kit for Yamaha RS Vector
This Wiseco standard bore piston kit for Yamaha RS Vector snowmobiles restores factory compression in the 2005-2007 engine, with an OEM cross-reference of 4893M07900, a 79.00 mm bore, and a 12.5:1 compression ratio.
Overview
This piston kit for Yamaha RS Vector is a standard bore top end component built to bring a worn engine back to factory specification. The standard piston for Yamaha RS Vector keeps the original cylinder bore size, so no overbore work is required, and the 12.5:1 compression ratio matches the factory engine tune for dependable trail performance.
Built For Performance
- Wiseco forged piston construction for durability at sustained RPM
- Standard 79.00 mm bore size keeps the original cylinder dimensions
- 12.5:1 compression ratio matched to the factory engine spec
- OEM cross-reference 4893M07900 for straightforward verification
- Kit supplied with piston, rings, wrist pin, and circlips where packaged
- Direct replacement for the original piston assembly
Fits These Machines
- for Yamaha RS Vector 2005
- for Yamaha RS Vector 2006
- for Yamaha RS Vector 2007
On-The-Job Use
- Top end rebuilds on high-mileage RS Vector four-stroke engines
- Compression restoration when leakdown tests show worn rings
- Standard bore refresh that avoids cylinder boring and replating
- Trail riding and touring where reliable power delivery matters
Specs At A Glance
| Part Number(s) | 4893M07900 |
| Bore Size | 79.00 mm |
| Compression Ratio | 12.5:1 |
| Bore Type | Standard |
| Brand | Wiseco |
| Application | for Yamaha RS Vector, 2005-2007 |
Good To Know
Q: Can this piston be installed without boring the cylinder? A: Yes, a standard bore piston is designed for a cylinder that is still within factory bore tolerance and only needs honing.
Q: Should I measure piston to cylinder clearance before assembly? A: Yes, clearance should always be measured and compared to the piston manufacturer specification to confirm the cylinder is serviceable.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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