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JRZ Suspension Engineering is proud to offer our newest triple adjustable racing damper. the JRZ 12 31. Building upon the years of success of our original triple adjustable damper. the JRZ 12 31 takes our damping philosophy to the next level. Every adjustment has an increased damping force range with finer adjustments engineered to enable the chassis tuner to make significant predictable changes every time. Compression adjustments are separated into the high speed and low speed piston velocity ranges affecting the bleed and blow off points of the damping curve. All oil flow paths in the JRZ 12 31 have been redesigned to maximize efficiency and give crisp feel to the driver. Rebound valving has been completely redesigned to eliminate influence over compression forces and smooth pressure development. At the heart of the new JRZ 12 31 package is our latest motorsport piston. designed to give increased control over base characteristics. reduce hysteresis. and operate smoother. To ensure that the valving designed into the JRZ 12 31 are the determining forces. JRZ has included new low friction coatings. seals and bearings with this package. Custom applications are available. An easy to use system. the JRZ 12 31 enables the chassis tuner to achieve the desired mass control and handling with precision. Digressive high speed compression blow off adjustment allows for a stiff compression valving while maintaining smooth response and without losing traction. The low speed adjustment is a powerful tool that enables the chassis tuner to maximize grip and optimize vehicle balance. The result is a damper that provides ultimate chassis and ride height control with maximum mechanical traction. The JRZ standard large 22 mm piston rod works in concert with the high speed valving to maximize blow off valve response. achieving solid chassis control without using a high spring rate.

Features

• Rebound adjustment independent from compression
• Extra large adjustment range
• 12 clicks low speed compression
• 21 clicks high speed compression
• 24 rebound • High response piston
• Precise canister
• Low friction
• Adjustable gas pressure

JRZ 12 31 dampers are shipped with 360 degree swivel hoses and are available with zero-inclusion quick disconnects for mounting canisters within the chassis for ease of adjustment accessibility. Our newest motorsport piston has been developed to deliver a smooth and responsive damping characteristic.  To customize track to track setups and tailor the chassis to the driver; the JRZ 12 31 has an adjustment range able to provide damping to spring configurations ranging from 1.5-6Hz on vehicles with moderate to large aerodynamic loads. Even with a large range. each adjustment is designed to be small. even steps giving precision and confidence when making changes. The JRZ 12 31 is here to take you to the next level. Dedicated racing cars with experienced drivers deserve the professional technology JRZ delivers. With valving designed and innovated by JRZ Suspension Engineering. the JRZ 12 31 is shipped as a custom configuration always tailored to the customer’s needs. and always comes with our world renowned personal service.

Benefits

• Precise control of the chassis and unsprung masses
• Easy to change damping curves
• Large adjustment range. with fine tuning ability

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For over 40 years; Cosworth's been leader in innovative multi valve cylinder head design both racing high performance production cars. Cosworth Ported Valve Cylinder head range is latest advancement. Modified from OE cylinder head castings; substantial flow improvements upgraded valve train components offer superior performance your high performance engine.
Each original cylinder head design is carefully evaluated tested to establish improvements required to meet target performance level. Hours of testing flow bench validation used to determine best advanced port design yielding maximum usable power response. However; there is more to cylinder head design than just maximum flow. It is critical that port velocits maintained to ensure drivability valve train components matched to guarantee reliable performance. Once of these factors have been tested validated; final port contour is digitized. Using digitized program; we then reshape both intake exhaust ports using axis mill producing an accurate consistent port shape every time. In addition to reshaping enlarging intake exhaust ports; most Valve Cylinder heads feature a re-shaped combustion chamber to un-shroud valves increasing flow performance. After machining; each cylinder head receives a multiangle high performance valve on precision valve seat cutter. Then each cylinder head is ultrasonically; cleaned; serialized then hand assembled with select high performance valve train components; ready to install on your engine.
Key Features
All OE Castings
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
Reshaped combustion chamber on most applications
Flow bench proven design
Dyno tested
Machined Cosworth Logo
Precision Multi angle valve job
Pre-assembled; ready to install
Machined port bore finish
Knife edge port divider Learn More

JRZ Suspension Engineering is proud to introduce the JRZ RS1. a revolutionary development in multipurpose high performance damping. Applying our race winning technology. JRZ designed the JRZ RS1 to give ultimate comfort for public roads and precise chassis control when driving on track.
 
The JRZ RS1 is a high gas pressure. single adjustable monotube damper. The canister has been designed inside of the damper. JRZ inner canister technology gives the advantages of monotube canister dampers without the mounting concerns and complexity. Easy to install. the JRZ RS1 is available as a complete kit with mounting hardware and springs for all applications we support.Built on the same roduction line and sharing components with our pro racing applications. the JRZ RS1 is of true professional heritage. Following JRZ’s design philosophy. the JRZ RS1 has a large 22mm diameter piston rod in strut applications and a 16mm diameter piston rod in aluminium damper applications. The large piston rod magnifies the high pressure gas charge which means great chassis control without using a high spring rate or increasing harshness. 
Features

• 22 mm rod strut. 16 mm rod damper
• 24 clicks of rebound
• Adjustable gas pressure. mono tube
• Piston designed for high performance
• Large adjustment range

Utilizing a mono tube design with a high flow piston ensures the smoothest possible ride in normal conditions while the bleed adjustment gives the ability to tune for racing situations. Unlike many other single adjustable suspensions. damping balance is carefully maintained between compression and rebound. This damping balance is critical to maintaining tire contact with the road in addition to controlling the main mass of the vehicle. To satisfy the diverse needs of each driver’s application. the JRZ RS1 has an extra large adjustment range. With a few clicks you can turn your smooth street car into a crisp. rock solid track car in seconds. JRZ has designed the JRZ RS1 to give the end user the best possible damper to drive daily. while maintaining the racetrack performance that wins championships. The JRZ RS1 is shipped as a bolt-on kit and always comes with the personal support JRZ is known for. Using the best materials. coatings and aerospace standard manufacturing processes as in our motorsport line; the JRZ RS1 is designed to perform flawlessly. Adjustment is easy to perform and comes with the knowledge base only JRZ provides to his customers.
 
Benefits

• Easy to use and bolt-in
• Street ride. racing performance
• Extra long product life
• One adjustment for complete control of ride and handling
• Professional racing quality

Recommended applications

• Daily driving
• Drivers education (DE) events and track days
• Club racing

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For a strong boost in power; the Invidia Down Pipe offers an alternative to other power-boosting enhancements. To see just how much power the Invidia Downpipe can produce; a quick look at its dyno chart shows it easily added several horsepower to the stock exhaust system. Each Invidia Downpipe features a large 4 inch Stainless Steel bellmouth to enhance power by freeing excess gas. The Invidia Downpipe sports a one-piece design; eliminating the need for the stock catalytic converter. In addition; each Invidia Downpipe can be bolted up to any Invidia Exhaust or a stock exhaust for an easy installation. Downpipe
Unpolished
Engine :-
Aspiration :- T
Vehicle Engine Options :- EJ205;EJ255;EJ257
Vehicle Interior Options :- H4 Aspiration: T
Vehicle Exterior Options :- Fuel: FI-GAS
Cylinder Type :-
Vehicle Options :- Piping 76mm

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For: Subaru WRX YR: 2002-2005 Cyl: 4 App: 2.0L 242mm (2600#)
The FX400 System uses the Power Plus I Pressure Plate with a custom, extremely durable, Sprung Ceramic disc. This is the ultimate extreme duty street and/or road/drag racing system. It is available in a 4,6 or 8 wing (paddle) configuration, with the 4-wing being the more aggressive setup and 8-wing being the less aggressive (please specify which type you prefer). The sprung hub design allows for moderate dampening in high-torque applications, rendering it much more street friendly than solid or rigid designs. This disc is designed for outstanding holding capacity, and rapid heat dissipation. The FX400 ceramic paddle design creates a quick and rapid engagement as well as clutch chatter that may not be ideal for street driven vehicles.  Learn More

COMPETITION CLUTCH
Stage 5 Sprung - Strip Series 1420 Clutch Kit

This assembly; available with a double spring; six rivet carriage is good for ease of gear transition with higher horsepower. This disc complimented by a performance pressure plate provides up to 300% increase in torque capacity. 300 mile break-in recommended with this set-up.

The 1420 Series kit includes a performance pressure plate; a four puck high torque sprung disc Ceramic buttons; all applicable bearings; and the appropriate alignment tool.

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For: Subaru WRX Sti YR: 2004-2011 Cyl: 4 App: 2.5L Turbo 6-SHPeed
The versatile FX500 System uses either the Power Plus I or Power Plus II Pressure Plate along with a solid center 4,6 or 8 wing (paddle) Ceramic Button disc. The FX500 disc is designed for outstanding holding capacity and rapid heat dissipation. The FX500 ceramic paddle design creates a quick and rapid engagement as well as clutch chatter that is not recommended for the street. Learn More

COMPETITION CLUTCH
Stage 4 Sprung - Strip Series 1620 Clutch Kit

This assembly; available with a double spring; six rivet carriage is good for ease of gear transition with higher horsepower. This disc complimented by a performance pressure plate provides up to 250% increase in torque capacity. 300 mile break-in recommended with this set-up.

The 1620 Series kit includes a performance pressure plate; a six puck high torque sprung disc with Ceramic buttons; all applicable bearings; and the appropriate alignment tool.

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Cosworth Sport brake kits feature fully forged calipers optimal strength light weight. bolt in bridge design allows a super stiff caliper without sacrificing cooling. end result is better performance with less vibration; noise; pad taper.
Cosworth 2-piece rotors designed 10-30% better airflow than directional vaned racing rotors. They were produced with a proprietary cast iron formula; which specified with durability in mind. hats brackets made with a special type of billet aerospace aluminum are machined in USA to standards.
All parts bench tested prior to shipment. Each caliper is 100% pressure tested to 2;500 PSI. Every brake line is 100% pressure tested to 4;500 PSI. Every assembled two-piece rotor is tested runout. Each is optimized specific vehicle application.
Specs:
Bolt-in bridge minimizes caliper compliance
2-piece rotor design allows 10-30% better airflow greatly improving performance
DOT Legal Stainless brake lines with clear abrasion-resistance cover
Piston sizes optimized each vehicle application to maintain bias
DifferenTiAL'ston sizes minimize taper longer life a firmer pedal
Dust boots standard reduced maintenance
All finished parts 100% leak down pressure tested Learn More