Description
The Watcon Engine Conversion Plate for Kawasaki 440/550 to 650/750/800 is the original RCJS adapter that makes big engine swaps into classic 440, JS550, and 550SX hulls clean and repeatable. This plate is widely recognized as one of the best aligning conversion plates on the market, helping you drop in a 650, 750, or 800 motor with confidence.
- Allows installation of Kawasaki 650, 750, or 800 engines into JS440, JS550, and 550SX hulls.
- Engineered as a true alignment plate to keep driveline geometry correct for smooth coupler engagement.
- Uses your stock hardware for a straightforward install: K650 or K750 bed pan to engine bolts, and 550 engine pan bolts from pan to adapter.
- Eliminates guesswork when setting up a conversion, making the swap more accessible for home builders and shops.
- Ideal for riders wanting modern power and reliability in a classic 440 or 550 hull.
- Robust construction stands up to high power setups, hard riding, and race conditions.
No hardware is included, as the design is intended to reuse stock fasteners as described above. Part number # 550-CONV.
