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  1. Cosworth High Performance Short Block Assemblies for Subaru Impreza WRX STI 2004-2008
    $8,983.00
    Cosworth High Performance engine assemblies the perfect basis your high performance application. Each version gone through countless hours of engineering evaluation to determine best combination of parts build specification; ensuring maximum reliable performance. Each Cosworth High Performance enginembly starts with new select components as foundation of performance build. Every block is thoroughly inspected before cylinders honed to perfection. We then balance rotating assembly that includes either a factory forged crankshaft or Cosworth Billet crank along with Cosworth Forged connecting rods; Cosworth Tri-Metal bearings Cosworth Forged Pistons. motorsport grade parts then professionally assembled by expert engine builders in Cosworth enginembly facility. Each High Performance enginembly includes a complete specification sheet listing critical dimensions along with a serialized plaque. maximum performance; combine with a Cosworth ported Valve Cylinder Head camshaft set.
    Subaru EJ25 High Performance Short Block 2.5L
    The Cosworth EJ25 is an excellent starting point high performance track applications.
    New Subaru EJ25 EJ257 Block
    New Subaru EJ25 Forged Crankshaft or Cosworth Billet Crank (79mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (99.5mm) rings
    Cosworth Tri-metal bearings
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring set
    Bearing clearance checked
    Deck height checked
    Connecting side clearance checked
    Crankshaft float checked
    Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.0L
    The Cosworth 2.0L 4G63 is an excellent starting point high performance track applications.
    New Mitsubishi 4G63 Evolution Block
    New Mitsubishi forged crankshaft (88mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (85mm) rings
    Cosworth Tri-metal bearings
    Cosworth Heavy Duty main studs
    Piston squirt jets
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring set
    Bearing clearance checked
    Deck height checked
    Connecting side clearance checked
    Crankshaft float checked
    Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.2L
    The Cosworth 4G63 2.2L stroker engine combines perfect bore to stroke ratio; yielding potentially gains in torque while still allowing engine to rotate produce power at higher rpms.
    New Mitsubishi 4G63 Evolution Block
    New Cosworth Billet Crank (94mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (86mm) rings
    Cosworth Tri-metal bearings
    Cosworth Heavy Duty main studs
    Piston squirt jets
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring g Learn More
  2. Cosworth High Performance Short Block Assemblies for Subaru Impreza WRX STI 2004-2008
    $5,391.00
    Cosworth High Performance engine assemblies the perfect basis your high performance application. Each version gone through countless hours of engineering evaluation to determine best combination of parts build specification; ensuring maximum reliable performance. Each Cosworth High Performance enginembly starts with new select components as foundation of performance build. Every block is thoroughly inspected before cylinders honed to perfection. We then balance rotating assembly that includes either a factory forged crankshaft or Cosworth Billet crank along with Cosworth Forged connecting rods; Cosworth Tri-Metal bearings Cosworth Forged Pistons. motorsport grade parts then professionally assembled by expert engine builders in Cosworth enginembly facility. Each High Performance enginembly includes a complete specification sheet listing critical dimensions along with a serialized plaque. maximum performance; combine with a Cosworth ported Valve Cylinder Head camshaft set.
    Subaru EJ25 High Performance Short Block 2.5L
    The Cosworth EJ25 is an excellent starting point high performance track applications.
    New Subaru EJ25 EJ257 Block
    New Subaru EJ25 Forged Crankshaft or Cosworth Billet Crank (79mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (99.5mm) rings
    Cosworth Tri-metal bearings
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring set
    Bearing clearance checked
    Deck height checked
    Connecting side clearance checked
    Crankshaft float checked
    Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.0L
    The Cosworth 2.0L 4G63 is an excellent starting point high performance track applications.
    New Mitsubishi 4G63 Evolution Block
    New Mitsubishi forged crankshaft (88mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (85mm) rings
    Cosworth Tri-metal bearings
    Cosworth Heavy Duty main studs
    Piston squirt jets
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring set
    Bearing clearance checked
    Deck height checked
    Connecting side clearance checked
    Crankshaft float checked
    Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.2L
    The Cosworth 4G63 2.2L stroker engine combines perfect bore to stroke ratio; yielding potentially gains in torque while still allowing engine to rotate produce power at higher rpms.
    New Mitsubishi 4G63 Evolution Block
    New Cosworth Billet Crank (94mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (86mm) rings
    Cosworth Tri-metal bearings
    Cosworth Heavy Duty main studs
    Piston squirt jets
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring g Learn More
  3. Cosworth High Performance Long Block Assemblies for Subaru Impreza WRX STI 2008-2010
    $16,343.00
    The Cosworth Subaru EJ25 CS600 series is designed extreme track use the demanding performance enthusiast. Each assembly is precision built by of Cosworths skilled craftsmen using finest components from parts catalog to ensure maximum reliable power performance. Starting with a Subaru EJ257 semi closed deck block; we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. block is then assembled with Forged Pistons; motorsport grade Forged H Beam connecting rods along with high performance and main bearings a STI Forged crankshaft. maximum performance; an optional steel billet crank is available (CS600X). Once cylinder block assembly is completed; we install a pair of CNC machine port-bored Valve Cylinder heads with proven S2 camshafts complete with valve lash to specifications. cylinder heads secured with high performance 11mm steel studs sealed with a Cosworth high performance stopper layer steel head gasket. Finally; we install of blue-printed; high pressure pumps maximum lubrication. This proven engine combination been used by teams to events in both North Americaand Europe.
    Key Features
    New Subaru EJ25 engine
    New Subaru EJ25 Forged Crankshaft
    Optional Billet Cosworth Crankshaft (CS600X)
    Cosworth Forged H-beam Connecting Rods
    Cosworth Forged Pistons rings
    Cosworth motorsport Tri-metal bearings
    Balanced to within gram
    Complete blue-print assembly
    Enlarged Intake Exhaust ports
    Large diameter stainless steel intake valves
    Large diameter Inconel exhaust valves
    Hi Rev; Dual valve springs
    Titanium Retainers
    Hardened Steel spring platforms.
    Multi angle valve job
    CNC Machined port finish
    Knife edge port divider
    Cosworth S2 High lift camshafts
    Valve lash set
    Cosworth high pressure pump
    Cam covers
    Cosworth serial number Learn More
  4. Cosworth High Performance Long Block Assemblies for Subaru Impreza WRX STI 2008-2010
    $16,343.00
    The Cosworth Subaru EJ25 CS600 series is designed extreme track use the demanding performance enthusiast. Each assembly is precision built by of Cosworths skilled craftsmen using finest components from parts catalog to ensure maximum reliable power performance. Starting with a Subaru EJ257 semi closed deck block; we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. block is then assembled with Forged Pistons; motorsport grade Forged H Beam connecting rods along with high performance and main bearings a STI Forged crankshaft. maximum performance; an optional steel billet crank is available (CS600X). Once cylinder block assembly is completed; we install a pair of CNC machine port-bored Valve Cylinder heads with proven S2 camshafts complete with valve lash to specifications. cylinder heads secured with high performance 11mm steel studs sealed with a Cosworth high performance stopper layer steel head gasket. Finally; we install of blue-printed; high pressure pumps maximum lubrication. This proven engine combination been used by teams to events in both North Americaand Europe.
    Key Features
    New Subaru EJ25 engine
    New Subaru EJ25 Forged Crankshaft
    Optional Billet Cosworth Crankshaft (CS600X)
    Cosworth Forged H-beam Connecting Rods
    Cosworth Forged Pistons rings
    Cosworth motorsport Tri-metal bearings
    Balanced to within gram
    Complete blue-print assembly
    Enlarged Intake Exhaust ports
    Large diameter stainless steel intake valves
    Large diameter Inconel exhaust valves
    Hi Rev; Dual valve springs
    Titanium Retainers
    Hardened Steel spring platforms.
    Multi angle valve job
    CNC Machined port finish
    Knife edge port divider
    Cosworth S2 High lift camshafts
    Valve lash set
    Cosworth high pressure pump
    Cam covers
    Cosworth serial number Learn More
  5. Cosworth High Performance Long Block Assemblies for Subaru Impreza WRX STI 2008-2010
    $16,343.00
    The Cosworth Subaru EJ25 CS600 series is designed extreme track use the demanding performance enthusiast. Each assembly is precision built by of Cosworths skilled craftsmen using finest components from parts catalog to ensure maximum reliable power performance. Starting with a Subaru EJ257 semi closed deck block; we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. block is then assembled with Forged Pistons; motorsport grade Forged H Beam connecting rods along with high performance and main bearings a STI Forged crankshaft. maximum performance; an optional steel billet crank is available (CS600X). Once cylinder block assembly is completed; we install a pair of CNC machine port-bored Valve Cylinder heads with proven S2 camshafts complete with valve lash to specifications. cylinder heads secured with high performance 11mm steel studs sealed with a Cosworth high performance stopper layer steel head gasket. Finally; we install of blue-printed; high pressure pumps maximum lubrication. This proven engine combination been used by teams to events in both North Americaand Europe.
    Key Features
    New Subaru EJ25 engine
    New Subaru EJ25 Forged Crankshaft
    Optional Billet Cosworth Crankshaft (CS600X)
    Cosworth Forged H-beam Connecting Rods
    Cosworth Forged Pistons rings
    Cosworth motorsport Tri-metal bearings
    Balanced to within gram
    Complete blue-print assembly
    Enlarged Intake Exhaust ports
    Large diameter stainless steel intake valves
    Large diameter Inconel exhaust valves
    Hi Rev; Dual valve springs
    Titanium Retainers
    Hardened Steel spring platforms.
    Multi angle valve job
    CNC Machined port finish
    Knife edge port divider
    Cosworth S2 High lift camshafts
    Valve lash set
    Cosworth high pressure pump
    Cam covers
    Cosworth serial number Learn More
  6. Cosworth High Performance Long Block Assemblies for Subaru Impreza WRX STI 2008-2010
    $12,112.00
    The Cosworth Subaru EJ25 CS600 series is designed extreme track use the demanding performance enthusiast. Each assembly is precision built by of Cosworths skilled craftsmen using finest components from parts catalog to ensure maximum reliable power performance. Starting with a Subaru EJ257 semi closed deck block; we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. block is then assembled with Forged Pistons; motorsport grade Forged H Beam connecting rods along with high performance and main bearings a STI Forged crankshaft. maximum performance; an optional steel billet crank is available (CS600X). Once cylinder block assembly is completed; we install a pair of CNC machine port-bored Valve Cylinder heads with proven S2 camshafts complete with valve lash to specifications. cylinder heads secured with high performance 11mm steel studs sealed with a Cosworth high performance stopper layer steel head gasket. Finally; we install of blue-printed; high pressure pumps maximum lubrication. This proven engine combination been used by teams to events in both North Americaand Europe.
    Key Features
    New Subaru EJ25 engine
    New Subaru EJ25 Forged Crankshaft
    Optional Billet Cosworth Crankshaft (CS600X)
    Cosworth Forged H-beam Connecting Rods
    Cosworth Forged Pistons rings
    Cosworth motorsport Tri-metal bearings
    Balanced to within gram
    Complete blue-print assembly
    Enlarged Intake Exhaust ports
    Large diameter stainless steel intake valves
    Large diameter Inconel exhaust valves
    Hi Rev; Dual valve springs
    Titanium Retainers
    Hardened Steel spring platforms.
    Multi angle valve job
    CNC Machined port finish
    Knife edge port divider
    Cosworth S2 High lift camshafts
    Valve lash set
    Cosworth high pressure pump
    Cam covers
    Cosworth serial number Learn More
  7. Cosworth High Performance Long Block Assemblies for Subaru Impreza WRX STI 2008-2010
    $16,343.00
    The Cosworth Subaru EJ25 CS600 series is designed extreme track use the demanding performance enthusiast. Each assembly is precision built by of Cosworths skilled craftsmen using finest components from parts catalog to ensure maximum reliable power performance. Starting with a Subaru EJ257 semi closed deck block; we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. block is then assembled with Forged Pistons; motorsport grade Forged H Beam connecting rods along with high performance and main bearings a STI Forged crankshaft. maximum performance; an optional steel billet crank is available (CS600X). Once cylinder block assembly is completed; we install a pair of CNC machine port-bored Valve Cylinder heads with proven S2 camshafts complete with valve lash to specifications. cylinder heads secured with high performance 11mm steel studs sealed with a Cosworth high performance stopper layer steel head gasket. Finally; we install of blue-printed; high pressure pumps maximum lubrication. This proven engine combination been used by teams to events in both North Americaand Europe.
    Key Features
    New Subaru EJ25 engine
    New Subaru EJ25 Forged Crankshaft
    Optional Billet Cosworth Crankshaft (CS600X)
    Cosworth Forged H-beam Connecting Rods
    Cosworth Forged Pistons rings
    Cosworth motorsport Tri-metal bearings
    Balanced to within gram
    Complete blue-print assembly
    Enlarged Intake Exhaust ports
    Large diameter stainless steel intake valves
    Large diameter Inconel exhaust valves
    Hi Rev; Dual valve springs
    Titanium Retainers
    Hardened Steel spring platforms.
    Multi angle valve job
    CNC Machined port finish
    Knife edge port divider
    Cosworth S2 High lift camshafts
    Valve lash set
    Cosworth high pressure pump
    Cam covers
    Cosworth serial number Learn More
  8. Cosworth High Performance Long Block Assemblies for Subaru Impreza WRX STI 2008-2010
    $12,112.00
    The Cosworth Subaru EJ25 CS600 series is designed extreme track use the demanding performance enthusiast. Each assembly is precision built by of Cosworths skilled craftsmen using finest components from parts catalog to ensure maximum reliable power performance. Starting with a Subaru EJ257 semi closed deck block; we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. block is then assembled with Forged Pistons; motorsport grade Forged H Beam connecting rods along with high performance and main bearings a STI Forged crankshaft. maximum performance; an optional steel billet crank is available (CS600X). Once cylinder block assembly is completed; we install a pair of CNC machine port-bored Valve Cylinder heads with proven S2 camshafts complete with valve lash to specifications. cylinder heads secured with high performance 11mm steel studs sealed with a Cosworth high performance stopper layer steel head gasket. Finally; we install of blue-printed; high pressure pumps maximum lubrication. This proven engine combination been used by teams to events in both North Americaand Europe.
    Key Features
    New Subaru EJ25 engine
    New Subaru EJ25 Forged Crankshaft
    Optional Billet Cosworth Crankshaft (CS600X)
    Cosworth Forged H-beam Connecting Rods
    Cosworth Forged Pistons rings
    Cosworth motorsport Tri-metal bearings
    Balanced to within gram
    Complete blue-print assembly
    Enlarged Intake Exhaust ports
    Large diameter stainless steel intake valves
    Large diameter Inconel exhaust valves
    Hi Rev; Dual valve springs
    Titanium Retainers
    Hardened Steel spring platforms.
    Multi angle valve job
    CNC Machined port finish
    Knife edge port divider
    Cosworth S2 High lift camshafts
    Valve lash set
    Cosworth high pressure pump
    Cam covers
    Cosworth serial number Learn More
  9. Cosworth High Performance Short Block Assemblies for Subaru Impreza WRX STI Limited 2004-2008
    $8,983.00
    Cosworth High Performance engine assemblies the perfect basis your high performance application. Each version gone through countless hours of engineering evaluation to determine best combination of parts build specification; ensuring maximum reliable performance. Each Cosworth High Performance enginembly starts with new select components as foundation of performance build. Every block is thoroughly inspected before cylinders honed to perfection. We then balance rotating assembly that includes either a factory forged crankshaft or Cosworth Billet crank along with Cosworth Forged connecting rods; Cosworth Tri-Metal bearings Cosworth Forged Pistons. motorsport grade parts then professionally assembled by expert engine builders in Cosworth enginembly facility. Each High Performance enginembly includes a complete specification sheet listing critical dimensions along with a serialized plaque. maximum performance; combine with a Cosworth ported Valve Cylinder Head camshaft set.
    Subaru EJ25 High Performance Short Block 2.5L
    The Cosworth EJ25 is an excellent starting point high performance track applications.
    New Subaru EJ25 EJ257 Block
    New Subaru EJ25 Forged Crankshaft or Cosworth Billet Crank (79mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (99.5mm) rings
    Cosworth Tri-metal bearings
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring set
    Bearing clearance checked
    Deck height checked
    Connecting side clearance checked
    Crankshaft float checked
    Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.0L
    The Cosworth 2.0L 4G63 is an excellent starting point high performance track applications.
    New Mitsubishi 4G63 Evolution Block
    New Mitsubishi forged crankshaft (88mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (85mm) rings
    Cosworth Tri-metal bearings
    Cosworth Heavy Duty main studs
    Piston squirt jets
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring set
    Bearing clearance checked
    Deck height checked
    Connecting side clearance checked
    Crankshaft float checked
    Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.2L
    The Cosworth 4G63 2.2L stroker engine combines perfect bore to stroke ratio; yielding potentially gains in torque while still allowing engine to rotate produce power at higher rpms.
    New Mitsubishi 4G63 Evolution Block
    New Cosworth Billet Crank (94mm)
    Cosworth Forged H-beam connecting rods
    Cosworth Forged Pistons (86mm) rings
    Cosworth Tri-metal bearings
    Cosworth Heavy Duty main studs
    Piston squirt jets
    Balanced to within .5 gram
    Complete blue-print assembly
    Ring g Learn More
  10.  JRZ RS Pro Double Adjustable Club Sport Damper : Subaru WRX-Sti N15
    $5,805.00
    JRZ Suspension Engineering offers the best high performance club sport damper available today. Combining the best aspects of our JRZ RS and 2-way racing damper. the JRZ RS Pro gives the owner ultimate suspension tuning ability while maintaining compliance for driving on public roads. A mono tube double adjustable damper with adjustable gas pressure. the JRZ RS Pro offers an increased adjustment range allowing the user to tune the car to their further needs. The JRZ RS Pro is available as a complete kit with springs and mounting hardware. Taking club sport performance to the next level. the RS Pro has a remote canister with a digressive blow off system. Digressive blow off allows for a stiff compression valving while maintaining smooth response. The result is a damper that provides ultra solid platform with smooth bump compliance. JRZ standard 22mm piston rods maximize flow to the blow off valve response to great chassis control without using a high spring rate.

    Features
    • 22 mm rod strut. 16 mm rod damper
    • 12 clicks of compression
    • 24 clicks of rebound
    • Adjustable gas pressure. mono tube
    • Piston designed for high performance
    • Large adjustment range
    • Fixed hoses for easy mounting. available quick disconnect fittings
    • Remote reservoir or piggyback canister 
    JRZ RS Pro damper kits are available in piggyback configurations or with remote canisters. The canister can be fixed to the damper for ease of installation. To customize track to track setups and tailor the chassis to the JRZ RS Pro has an extra large adjustment range.
    Each adjustment is designed to be an even step giving you predictability when making changes. The design of the JRZ RS Pro takes you to the next level. Stiffer cars with higher levels of power demand the control JRZ can supply. With the control of gas pressure charge as well and compression and rebound adjustments. the JRZ RS Pro will get the most out of your high performance car. The JRZ RS Pro is shipped as a bolt on kit with installation instructions and always comes with our world renowned personal service of JRZ.

    Benefits

    • Better chassis control for higher rate springs/power/ratio
    • Street ride. racing performance
    • Easy to change configurations

    Recommended applications 
    • Highly modified Street/DE
    • Experienced club racing
    • Entry level professional racing Learn More

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