HKS Capacity Upgrade Forged Pistons and Rods Kit VR38 4.3L - 2009-UP NISSAN R35 GT-R - 21004-AN019

HKS has redesigned VR38DETT 4.1L Kit to upgrade it to 4.3L Kit. This kit is available from street use to circuit use.

The following is the main redesigned features:
1) Higher Torque - Allowable Torque: 150kgm
2) Low Vibration - Equivalent Level to the Stock
3) Longer Stroke - Stroke: 99mm (the world's longest level)

Features:

Piston Kit
- The billet-pistons have the ideal piston shape.
- The special truss shape enhances the durability and makes ultra-lightweight pistons.
- A squish area allows high rate combustion.

Connecting Rod
- The connecting rods were designed specifically for this kit. Engine modification is minimized.

Crankshaft Stroke - 99.0mm
- 9.0mm stroke without bore size change is incomparable.
- Billet crankshaft.
- The vibration generated from V6 engine is reduced to the degree to be not annoying by precise balance adjustment. (The included parts must be used together.)
- The structure was designed to reduce a load to the metals so it can withstand the increased load to the main metal due to higher torque.
- High efficiency heavy metal made balance weight reduces the weight and achieves high engine response.

Compatible with Stock Bore Size - 95.5mm
- The bore size is the same as the stock size to maintain the engine block rigidity and the ideal heat conduction for the optimal engine performance.
- Modification of liner is not necessary so the cost related to this liner modification can be saved.

Special Oil Jet
- A special oil jet to cool down the pistons to the optimum level is newly designed.

Other Notes:
- The Billet Piston employs an appropriate squish area to improve fuel combustion.
- Adopting the molybdenum piston skirt coating reduces the friction caused by the piston movement.
- A billet-crankshaft with high efficient balance weight reduces vibration, improves engine response, and decreases the weight.
- Balancing was performed based on the products included in this kit. Using other products with this kit may cause engine vibration.

Specifications
Bore: 95.5mm
Stroke: 99.0mm
Comp. ratio (t=0.8): 8.6
Tolerate RPM: 7400rpm
Displacement: 4255ml