The Hot Rods 4419 Stroker Crankshaft is a performance-focused replacement crankshaft designed for select Kawasaki KX85 and KX100 models. Manufactured by Hot Rods, this complete crankshaft assembly is engineered as a premier alternative to a costly OEM crankshaft, providing dependable performance, durability, and straightforward installation for compatible applications.
Each Hot Rods crankshaft is factory assembled and trued to OEM specifications. The assembly includes proven Hot Rods connecting rods, top-end bearings, and crankshaft webs, allowing it to arrive complete and ready for installation. The crankshaft gears are manufactured to a quality level of DIN Class 9 or higher, supporting precise operation and long-term reliability. The assembly is also fully rebuildable with genuine Hot Rods connecting rods and bearings.
As a stroker crankshaft, the Hot Rods 4419 increases engine stroke to help produce greater displacement and horsepower. It is designed as a drop-in replacement that requires no modification in most applications and is CNC machined and dynamically balanced to accommodate the increased stroke. The crankshaft uses the stock piston in most applications and may be paired with a Cylinder Works Big Bore cylinder for additional displacement and horsepower gains. Fitment includes 2014–2018 Kawasaki KX85 models and 2014–2018 Kawasaki KX100 models, subject to application verification. Manufacturer and vendor part number: Hot Rods 4419.
Features:
- Complete Hot Rods stroker crankshaft assembly ready for installation
- Premier alternative to a costly OEM crankshaft
- Factory assembled and trued to OEM specifications
- Includes Hot Rods connecting rods, 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
- Increased stroke supports greater displacement and horsepower
- Drop-in replacement requiring no modification in most applications
- CNC machined and dynamically balanced for the increased stroke
- Uses the stock piston in most applications
- Compatible with Cylinder Works Big Bore cylinders for additional performance gains
- Fits 2014–2018 Kawasaki KX85 and 2014–2018 Kawasaki KX100 models
Fitment:
2014 Kawasaki KX 85 Big Wheel
2014 Kawasaki KX100
2014 Kawasaki KX85
2015 Kawasaki KX 85 Big Wheel
2015 Kawasaki KX100
2015 Kawasaki KX85
2016 Kawasaki KX 85 Big Wheel
2016 Kawasaki KX100
2016 Kawasaki KX85
2017 Kawasaki KX 85 Big Wheel
2017 Kawasaki KX100
2017 Kawasaki KX85
2018 Kawasaki KX 85 Big Wheel
2018 Kawasaki KX100
2018 Kawasaki KX85
2019 Kawasaki KX100
2019 Kawasaki KX85
2020 Kawasaki KX100
2020 Kawasaki KX85
2021 Kawasaki KX100
2021 Kawasaki KX85
2022 Kawasaki KX85
2023 Kawasaki KX85
2024 Kawasaki KX85
2025 Kawasaki KX85