The Hot Rods 4070 Stroker Crankshaft is a complete, installation-ready replacement for select Honda TRX450R and TRX450ER Electric Start sport ATVs. Designed as a premier alternative to a costly OEM crankshaft, this Hot Rods crankshaft is factory assembled and trued to OEM specifications for dependable performance, long service life, and straightforward installation.
This stroker crankshaft increases engine stroke to help produce greater displacement and horsepower while using the stock piston in most applications. It is CNC machined and dynamically balanced to accommodate the increased stroke, providing a drop-in replacement that typically requires no engine modification. The gear components are manufactured to DIN Class 9 or higher quality standards, while the included Hot Rods connecting rod, top-end bearings, and crankshaft webs are proven for durability. The assembly is also fully rebuildable with genuine Hot Rods connecting rods and bearings.
Designed for fitment on 2006–2009 and 2012–2014 Honda TRX450ER Electric Start models, as well as 2006–2008 Honda TRX450R models, this Hot Rods part is suitable for riders and builders seeking increased engine performance without sacrificing serviceability. It can also be matched with Cylinder Works Big Bore cylinders for additional displacement and horsepower gains. Verify model year and engine configuration before ordering.
Brand: Hot Rods. Manufacturer part number: 4070. Vendor part number: 4070. Product type: Stroker crankshaft. Size: Standard replacement fitment for the listed Honda TRX450R and TRX450ER applications.
Features:
- Complete Hot Rods stroker crankshaft assembly ready for installation
- Premier alternative to a costly OEM crankshaft
- Factory assembled and trued to OEM specifications
- Increased stroke supports greater displacement and horsepower
- Drop-in replacement that requires no modification in most applications
- CNC machined and dynamically balanced for the increased stroke
- Uses the stock piston in most applications
- Includes Hot Rods connecting rod, top-end bearings, and crankshaft webs
- Fully rebuildable with genuine Hot Rods connecting rods and bearings
- Gears manufactured to DIN Class 9 or higher quality standards
- Compatible with Cylinder Works Big Bore cylinders for additional performance potential
- Fits select 2006–2009 and 2012–2014 Honda TRX450ER Electric Start models and 2006–2008 Honda TRX450R models
Fitment:
2005 Honda CRF450X
2006 Honda CRF450X
2006 Honda TRX450ER Electric Start
2006 Honda TRX450R
2007 Honda CRF450X
2007 Honda TRX450ER Electric Start
2007 Honda TRX450R
2008 Honda CRF450X
2008 Honda TRX450ER Electric Start
2008 Honda TRX450R
2009 Honda CRF450X
2009 Honda TRX450ER Electric Start
2009 Honda TRX450R
2010 Honda CRF450X
2010 Honda TRX450ER Electric Start
2011 Honda CRF450X
2011 Honda TRX450ER Electric Start
2012 Honda CRF450X
2012 Honda TRX450ER Electric Start
2012 Honda TRX450R
2013 Honda CRF450X
2013 Honda TRX450ER Electric Start
2013 Honda TRX450R
2014 Honda CRF450X
2014 Honda TRX450ER Electric Start
2014 Honda TRX450R
2015 Honda CRF450X
2016 Honda CRF450X
2017 Honda CRF450X