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Quicksilver Circle Track engines are designed to deliver torque and reliability, and they offer parts and components to keep your engine winning races and championships. Quicksilver Circle Track valve springs ensure valves close properly and at the right time, maintaining proper engine performance. These valve spring kits include retainers and locks.
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$1,383.99
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$1,618.99
$1,245.59
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$1,457.09
On Sale
RSO Suspension adjustable remote ARC reservoir coilover shocks provide improved suspension damping while increasing on and off-road driving comfort. They feature hand adjustable compression levels, as well as adjustable rebound for the off roader that is serious about their suspension tuning. Steel smooth bore machined alloy bodies give maximum corrosion resistance and billet coil spring nut uses the threaded body for precise height and preload adjustments. The shocks utilize Eibach coil springs for extended performance and retains tolerances throughout their life. Higher spring rates and larger body increases the load capacity fixing sagging issues from added weight due to bumpers, gear or added equipment. The steel shafts and heat-treated steel spherical bearings offer strength and dependability. The external reservoir with high-flow hydraulic hose allows for increased oil and nitrogen capacity giving greater heat dissipation, increasing performance, and eliminating shock fade. For incredible performance and precise control, RSO Suspension's adjustable compression and rebound coilover shocks deliver. Order the model recommended for your make/model. Product features and details: * Vehicle-specific fitment to ensure that the part is right for your vehicle including vehicle specific reservoir mounts—backed by a limited 1-year manufacturer warranty * ACR shocks provide hand adjustable compression levels—soft or firm—as well as rebound adjustability for ultimate suspension tuning while increasing suspension travel and load capacity * Uses Eibach high-quality springs for increased on and off-road comfort while increasing suspension travel and load capacity, while the polished 3/4 in. steel shafts and heat-treated steel spherical bearings offer strength and durability * 2.5 in. steel body is threaded to allow precise height and spring preload settings using the billet aluminum coil spring adjuster * Direct replacement for stock and aftermarket lift kits * External remote reservoir with large 9/16 in. hydraulic hose allows for increased oil and nitrogen capacity reducing heat and shock fade * Race-developed high-flow piston design
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$1,653.99
$1,455.51
On Sale
RSO Suspension Stage 1.0 lift kits for the Toyota 4Runner are the premier entry-level kit for the off-roader looking to lift their vehicle and get it trail-ready. They're constructed with the highest quality materials to increase ground clearance and counteract heavier bumpers and gear. Aggressive damping performance is achieved via large 2.5 in. adjustable remote reservoir coilovers and shocks to help your 4Runner take on any obstacle. New rear coil springs lift the rear, and the optimized spring rates improve comfort on the trails while carrying all your gear. Specially chosen components offer easy installation while addressing weak points in factory suspension, enhancing articulation, stability, and handling performance. Precision-machined materials with industry-leading coatings ensure long life and corrosion-free performance on any terrain. Includes: * Front 2.5 in. remote reservoir coilover shocks * Rear 2.5 in. remote reservoir shocks * Rear springs black Notes: Lift Height: 2-3 in. Position: Front and rear
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$1,652.99
$1,454.63
On Sale
Wanting to deactivate the Multi-Displacement System of your Hemi vehicle will require a few things, including a non-MDS camshaft and components. Summit Racing™ Gen III Hemi MDS delete kits are offered in versions designed for engines with or without Variable Valve Timing (VVT). They contain premium components (except programmer) to help you complete the job. Each Summit Racing™ delete kit will include a head gasket set, timing cover gasket, non-MDS lifters, replacement cylinder head fasteners, non-MDS solenoid plug, and camshaft, along with valve springs and/or camshaft phaser limiters. Choose the combo designed for your vehicle.
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$1,296.90
$1,246.90
On Sale
Quicksilver cylinder heads are ideal replacement components for many GM-style 4-cylinder and V8 engines in marine, circle track racing, RV, truck, and hard-to-find industrial applications. With exclusive Black-X valves, they are designed to be the most robust, durable, and toughest service cylinder heads available. Select the cylinders heads designed to fit your engine. Features and benefits: * Thicker castings * Improved combustion chamber for better burn characteristics * Premium springs and hardened seats on the intake and exhaust ports * Quicksilver exclusive Black-X valves -- Composite valves -- Stainless steel treated with a cobalt-chromium alloy and black plasma nitriding -- Contribute to a 42 percent reduction in valve wear compared to traditional stainless steel valves with hardened seats -- Longer engine life, especially in the presence of modern ethanol-blended fuels * Backed with a 1-year limited warranty
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$1,548.99
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$1,394.09
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