JSN 1200cc competition short block engine (Black anodized head shell and power valves)
1200cc is a +16mm Yamaha stroker
This short block engine includes:
- Assembled Shortblock
- Nikasil plated CPI cylinder with JSN porting
- JSN engineered lightweight cases
- High strength custom alloy cylinder studs and nuts
- +16mm stroker crankshaft
- Wiseco Pistons
- JSN engineered head shell and domes (choose fuel type at time of ordering)
- JSN power valves,
- JSN black anodized PV guides
- JSN black anodized PV caps (raw finish shown in picture)
- Power Valve boots and retainers
OPTIONAL
- Intake manifold
- Featuring an industry first 20 degree carburetor angle for top performance (please verify hull fitment prior to ordering)
- Includes Speed Plate and throttle bracket and VForce Reeds and Cages
Optional Services
- $130 – Exhaust manifold bore & port matching (buy new or customer can ship exhaust manifold to HSI)
This engine will come fully assembled. For additional pricing we can port match your exhaust manifold. The little things add up to make a large difference! PLEASE ADD ON HERE IF YOU WANT THIS SERVICE.
* This short block engine does NOT include a flywheel cover, or bed plates
* This is not a stocked item (ETA 90 days - but often arrives sooner)
Part Number(s): 83-JSN-1200
00
