Upgrade your engine with the Hot Rods 4178 Stroker Crankshaft, a performance-focused replacement designed for select Yamaha YFM700 Raptor and YFM700RSE Raptor SE models. This complete crankshaft assembly is engineered to provide increased stroke, displacement, and horsepower while serving as a dependable alternative to a costly OEM crankshaft. The assembly is supplied ready for installation with proven Hot Rods connecting rods, top-end bearings, and crankshaft webs.
Each Hot Rods crankshaft is factory assembled and trued to OEM specifications to deliver reliable performance and durability. The 4178 is CNC machined and dynamically balanced to accommodate its increased stroke, and it uses the stock piston in most applications. Its drop-in design typically requires no engine modification, making it a practical choice for riders seeking additional power without extensive custom work. The crankshaft can also be paired with Cylinder Works Big Bore cylinders for further displacement and horsepower gains.
Built for long-term serviceability, the Hot Rods 4178 crankshaft is fully rebuildable with genuine Hot Rods connecting rods and bearings. Its gears are manufactured to a quality level of DIN Class 9 or higher for consistent operation and dependable drivetrain performance. This crankshaft fits 2013 and 2014 Yamaha YFM700 Raptor models, as well as 2007 through 2014 Yamaha YFM700RSE Raptor SE models. Verify the exact year and model configuration before installation. Manufacturer part number: 4178. Vendor part number: 4178.
Features:
- Stroker crankshaft designed to increase engine stroke, displacement, and horsepower
- Complete assembly includes Hot Rods connecting rods, top-end bearings, and crankshaft webs
- Factory assembled and trued to OEM specifications
- CNC machined and dynamically balanced for the increased stroke
- Drop-in replacement design requiring no modification in most applications
- Uses the stock piston in most applications
- Fully rebuildable with genuine Hot Rods connecting rods and bearings
- Gears manufactured to DIN Class 9 or higher quality standards
- Can be matched with Cylinder Works Big Bore cylinders for additional displacement and horsepower
- Fits 2013-2014 Yamaha YFM700 Raptor and 2007-2014 Yamaha YFM700RSE Raptor SE models
- Brand: Hot Rods
- Manufacturer part number: 4178
- Vendor part number: 4178
Fitment:
2006 Yamaha YFM700R Raptor
2007 Yamaha YFM700R Raptor
2007 Yamaha YFM700RSE Raptor SE
2007 Yamaha YFM700RY Raptor GYTR Edition
2008 Yamaha YFM700R Raptor
2008 Yamaha YFM700RSE Raptor SE
2009 Yamaha YFM700R Raptor
2009 Yamaha YFM700RSE Raptor SE
2010 Yamaha YFM700R Raptor
2010 Yamaha YFM700RSE Raptor SE
2011 Yamaha YFM700R Raptor
2011 Yamaha YFM700RSE Raptor SE
2012 Yamaha YFM700R Raptor
2012 Yamaha YFM700RSE Raptor SE
2013 Yamaha YFM700 Raptor
2013 Yamaha YFM700R Raptor
2013 Yamaha YFM700RSE Raptor SE
2014 Yamaha YFM700 Raptor
2014 Yamaha YFM700R Raptor
2014 Yamaha YFM700RSE Raptor SE
2015 Yamaha YFM700R Raptor
2016 Yamaha YFM700R Raptor
2017 Yamaha YFM700R Raptor
2018 Yamaha YFM700R Raptor
2019 Yamaha YFM700R Raptor
2020 Yamaha YFM700R Raptor