4786M09500 Wiseco Std Piston Kit for Yamaha WR450F 2003-2015 95.00 mm 13:1 CR
4786M09500 Wiseco Std Piston Kit for Yamaha WR450F 2003-2015 95.00 mm 13:1 CR
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Piston Kit for Yamaha WR450F
This Wiseco standard bore piston kit for Yamaha WR450F models from 2003 through 2015 restores top end compression with a 95.00 mm bore and 13:1 compression ratio, cross-referenced under part number 4786M09500.
Overview
This piston kit for Yamaha WR450F is a complete top end replacement built to factory bore dimensions. The 95.00 mm piston with 13:1 compression ratio delivers strong combustion sealing for riders rebuilding a worn or damaged top end. It suits mechanics and riders servicing 2003 to 2015 WR450F machines who want a dependable forged replacement piston.
Built For Performance
- Forged construction for strength under high rpm loads
- 95.00 mm standard bore sizing for a direct fit
- 13:1 compression ratio for strong combustion pressure
- Kit includes piston, rings, pin and clips
- Cross-referenced to part number 4786M09500
- Machined skirt profile for reduced friction
Fits These Machines
- for Yamaha WR450F 2003
- for Yamaha WR450F 2004
- for Yamaha WR450F 2005
- for Yamaha WR450F 2006
- for Yamaha WR450F 2007
- for Yamaha WR450F 2008
- for Yamaha WR450F 2009
- for Yamaha WR450F 2010
- for Yamaha WR450F 2011
- for Yamaha WR450F 2012
- for Yamaha WR450F 2013
- for Yamaha WR450F 2014
- for Yamaha WR450F 2015
On-The-Job Use
- Top end rebuilds after ring wear or piston scoring
- Off road trail and enduro riding on the WR450F
- Routine maintenance at recommended service intervals
- Restoring compression on a high hour engine
Specs At A Glance
| Part Number(s) | 4786M09500 |
| Bore Size | 95.00 mm |
| Compression Ratio | 13:1 |
| Piston Type | Standard bore |
| Construction | Forged |
Good To Know
Q: Does this kit include rings and a wrist pin? A: Yes, this style of piston kit typically ships with the piston, rings, wrist pin and retaining clips so the top end can be assembled in one job.
Q: Can I install this piston without measuring the cylinder? A: Bore and clearance should always be verified against the service manual, since a worn or out of round cylinder will shorten the life of any new piston.
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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