HKS 2.1L Stroker Kit 86.0mm Toyota GT86 & Subaru BRZ

Capacity Upgrade Kit developed by taking advantage of knowledge and experience acquired through D1 drift and time attack at Tsukuba Circuit. This kit was designed exclusively for the FA20 engine by meticulous analysis and experiment. HKS delivers this kit with "Made in Japan" quality. High performance specifications withstanding 550(ps)-50(kgf・m)!
This kit is for people want to upgrade all the way including the engine internals.

Features

POINT-1:PISTON KIT

• Carefully selected specially forged raw materials used
• Replacing the gasket enables both NA and turbo-charged engine users to use this kit.
• In order to cope with the demands of high outputs, strength analysis and tests have allowed optimisation of compression ratio for flexibility of setup and high boost use.
• Piston crown had 3D design in consideration of stock direct injection system.
• Stock pistons skirts overhang from the block during bottom of travel. Short height pistons have revised potential issues in this area.
• Friction, weight and other design properties to suit the needs of short height pistons.

POINT-2:CONNECTING ROD

• 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.　
  ※The crank metals (Nissan RB26 & SR) must be purchased separately.
• High strength I beam design and revised connecting rod bolt size.

POINT-3:CRANKSHAFT STROKE 90.0mm

• Made from HKS special forged material
• Perfect pin journal size was selected by merticulous analysis and experiment for extended stroke.
• Carefully designed weights balance the engine for maximum efficiency.

POINT-4:Stock Bore Compatible　86.0mm

• In order to maintain the engine block strength, the stock bore size is maintained meaning there is no need for cylinder liners
• Reduces the cost of installation as liners, bore & hone and block facing processes are unnecessary

HKS put all their know-how knowledge into engine parts from the data they have acquired from the drag race, round race, time attack and drift race. The HKS team provide Engine tuning ranging from Camshafts, Pulleys, Pistons and Rods to Timing Belts, Pump Upgrades and even Head Gaskets. The concept behind HKS engine products was to produce something the customers would truly be happy with.