8.0:1 CR. Piston weight 357gr. Piston pin weight 97gr.Head type: Dome 0.426″ / Dome -30cc. Compression height 1.285″. / Bore 3.4980″. Stroke 4.250″ (4-1/4″). Rod length 7.440″ / Cyl. length 5.330″. Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise. Note: Top compression ring will need additional clearance. See instructions. Note: Around 30% of stock 1340cc Shovel cylinders may present a problem in combination with the location of some of the oil return holes since KB pistons have a wider piston ring pack for better piston stability in the cylinder. In these cases the oil return hole must be re-located (lowered) to avoid excessive oil consumption.
- Category: Pistons and rings kits
- Manufacturer part number: KB288STD
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