HKS 2.1L Low Compression Step 2 Stroker kit for GT86 & BRZ FA20 engine.

Designed for high boost applications.

HKS 2.1 litre capacity upgrade kit consists of 1 x 90mm crankshaft, 4 x 86mm pistons with rings, pins & clips. 4 x forged I beam connecting rods.

By using different thickness head gaskets compression ratio can be altered to suit your purpose.

Stopper type gasket 0.5mm = 11.1 compression, 0.7 = 10.9, 1.0 = 10.5.

Grommet type gasket 0.8mm = 10.8, 1.2mm = 10.4

Piston Kit:
• Forged material improves durability.
• Piston crown to design optimizes the atomization of fuel during injection.
• The piston is recessed to match high lift HKS camshafts.
• Piston crown had 3D design in consideration of stock direct injection system.
• Molybdenum coated pistons reduce friction.
• Stock Bore Compatible 86.0mm

Connecting Rods:
• Forged I beam design and revised connecting rod bolt size.
• Specific connecting rods have been designed to suit the longer stroke.
• With no engine modifications, a special size crank pin has been set requiring new bearings.
• Note: The con rod bearings are sized to use Nissan RB26 & SR and must be purchased separately.

Crankshaft:
• Stroke 90.0mm
• Made from HKS special forged material
• Carefully designed weights balance the engine for maximum efficiency.

No notes available