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ACT Heavy-Duty Clutch Kits

ACT heavy-duty clutch kits offer a clamp load increase of 20 to 50 percent over OEM, significantly increasing torque capacity. The pedal feel with these clutches varies from stock to a moderate increase. Available for street and race applications, many are SFI-certified to ensure safety.

4.54 out of 5 stars ( 87 )

$1,514.00

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$1,607.00

XClutch Motorsports Clutch Kits

XClutch Motorsports clutch kits are performance upgrades that have been engineered to provide the ultimate in clutch performance. Utilizing the latest pressure plate design and friction material composition, XClutch upgrades offer the ideal balance between drivability and performance for different vehicle applications. The pivot point and diaphragm design are carefully analyzed to ensure positive pedal feel and increased clamping force. Select the kit for your application needs. XClutch 7.25 in. motorsport range is designed to provide a lightweight, high torque capacity solution for race vehicles such as used in time attack racing. The kits are available in single disc, twin disc, triple disc, and quad plate with a ceramic friction material, and are popular in high horsepower vehicles that use sequential gearboxes, and the lightweight design improves engine response. XClutch 7.25 in. race clutch range is ideal for drivers wanting a strong, high performance race clutch without having to compromise on quality. These kits are designed for high revving circuit or time attack applications and offer quick shift times and a lightweight construction. XClutch 8 in. range is designed to suit a wide range of vehicles commonly used in motorsport applications. As the clutch of choice for many club level racers and drifters around the world, these kits offer a great balance between torque holding capability, and heat capacity. These kits are available in both single and twin disc configurations. XClutch 9 in. range are one of their most adaptable kits for performance upgrades and conversions. They are available in organic, ceramic and carbon and offer exceptional torque capacity for high powered vehicles. The twin disc organic range is ideal for high horsepower street use, whilst the ceramic and carbon options are focused on track use where a higher heat capacity is often required.

Not Yet Reviewed

$1,982.19

Sikky Manufacturing Quick-Change Differential Subframe Kits

Sikky Manufacturing quick-change differential subframe kits are crucial additions when building your race car to perform at the highest level. These setups give the user the ability to change their gear ratio in less than 5 minutes by simply removing the rear cover of the rear end. This is a huge advantage when dialing in your setup at the track to make sure your gearing is in the sweet spot and you're not forced to shift at inopportune times. They are also designed to handle massive amounts of power. Sikky designed, developed, and tested the subframe kits to precise tolerances using their advanced technology, like FARO 3D scanning arm and Solidworks CAD software. Perfect rear placement ensures that the differential is placed dead center every time for optimum CV joint angles while also remaining Formula Drift legal. Built to handle all the abuse a high-horsepower car can put out, each subframe comes preassembled with the necessary brackets welded on and the entire assembly powdercoated black. Select the one designed for your vehicle. Kit details: * Formula Drift legal * No subframe core required * CNC-machined mounting brackets * Fully assembled using FARO arm to ensure absolute perfect rear placement * Black powdercoated * Includes all necessary hardware * Fuel cell/tank relocation required in most applications

Not Yet Reviewed

$1,595.99

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$1,755.59

XClutch Stage 2 Clutch Kits

XClutch Stage 2 clutch kits offer performance upgrades for both street and track applications. Designed in-house, XClutch utilizes the latest ceramic technology in their Stage 2 kits offering either a cushioned or a sprung-style friction disc. They are mated with a high performance pressure plate and are recommended for vehicles requiring a higher level of torque holding and heat capacity. Features: * 1C cushioned ceramic—the discs offer a dampening layer between the two friction surfaces which is clamped together as the force of the pressure plate is exerted on the disc. This dampening along with a sprung hub offers drivability despite the ceramic friction surface. These kits are ideal for track cars that require some drivability or very high-horsepower street vehicles that require the added heat capacity of the ceramic friction material. * 1B sprung ceramic—these friction discs offer a sprung center to allow for drivability and are specifically designed for track use with minor street use. The kits offer great heat capacity due to the ceramic friction material and are available for a wide range of performance vehicles.

Not Yet Reviewed

$1,571.72

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$1,611.48

ST Suspensions ST XTA Coilover Kits

ST Suspensions ST XTA coilover kits feature KW damping technology, which allows the suspension to be made either stiffer or softer depending on the driving conditions. This damping adjustment is made on the upper end of the chromed piston rod allowing the setup to be changed almost instantly. If the rebound force is increased, the car will drive with more track stability and reduced body roll. If the rebound force is decreased, the car will feel more comfortable when on the move. For increased performance, these ST XTA coilover kits feature an aluminum adjustable top mount allowing the camber and caster to be adjusted depending on your driving needs or vehicle setup.

5.0 out of 5 stars ( 1 )

$1,649.00

KW Variant 1 Coilover Kits

KW Variant 1 coilover kits are optimally adjusted for sporty driving, comfort, and safety. They enable you to drop your ride's center of gravity and customize the height at all four corners. KW Variant 1 twin tube coilover kits are designed with shorter INOX-Line stainless steel strut housings for more spring travel, anodized aluminum spring collars for durability, and high-tensile racing springs for strong support and comfort. Order the model with options recommended for your vehicle.

5.0 out of 5 stars ( 1 )

$1,774.00

ACT Xtreme Clutch Kits

ACT Xtreme clutch kits pave the road to high performance by meshing solid products, outstanding quality, and exceptional value. These Xtreme clutch kits with racing or street discs are based on solid engineering principles. They afford a clamp load increase of 50 to 100 percent with moderate-to-stiff pedal feel, and many of these new (not rebuilt) units are SFI-certified to ensure safety. You've spent long hours building your engine; now put it in motion with the smooth, precise feel and longer life of an ACT Xtreme clutch kit.

4.5 out of 5 stars ( 16 )

$1,546.00

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$1,658.00

Summit Bucks

Bilstein B16 Suspension Kits

Bilstein B16 suspension kits can equip your vehicle with a race-inspired system that delivers unsurpassed driving performance and high performance tuning. Kits reveal monotube gas shocks with manually adjustable 9 or 10-stage precision compression and rebound settings to take your vehicle from comfort mode to competition-ready with the turn of a dial. Their threaded bodies permit the accurate adjustability of the front and rear progressive rate springs to achieve the vehicle ride height, center of gravity, and the level of handling you desire. Whether you're cruising or competing, Bilstein B16 suspension kits put performance control in your hands. Features and benefits: * Threaded body adjustable range of 20mm at both axles * Lowering of approximately 30-50mm at front and rear * Road-tested and fine-tuned by Bilstein ride engineers--under extreme motorsports conditions * Spring plates and locknuts made from a special aluminum alloy * Triple-C-Technology surface coating--long-lasting corrosion resistance * Round threads for easy adjustment * Quality sport springs made from highly durable material * Gas pressure technology * Bilstein monotube technology--made in Germany

4.67 out of 5 stars ( 3 )

$1,969.00

aFe Mach Force XP Exhaust Systems

aFe Mach Force XP exhaust systems are constructed of mandrel-bent stainless steel and come complete with free-flowing muffler(s), OE-style bayonet hangers, flanges, and band clamps, plus all hardware necessary for a hassle-free installation. Offered in single, dual, or quad muffler configurations, their smooth curves and large diameter tubes help reduce restriction and keep exhaust gas flowing smoothly for increased horsepower and torque. Available in cat-back, axle-back, and downpipe-back designs, almost all Mach Force XP exhausts are direct bolt-on systems that require no cutting or drilling and include all necessary hardware for a hassle-free installation. Most also include wrinkle-black powdercoated or polished 304 stainless steel tip(s) with a laser-cut stainless steel aFe power badge. Select models have carbon fiber tips with CNC-machined laser-etched inserts. aFe Mach Force XP exhaust systems are an ideal combination of performance, fit, and value. Additional features include: * Fit a variety of light trucks and cars, including European models * Available with 409 or 304 stainless tubing (varies by model) * "Stepped design" models increase exhaust velocity creating a broader torque curve throughout the rpm range * Straight-through, free-flowing stainless steel mufflers absorb high-pitch tones producing powerful sound * Leak-free 360-degree sealing * Stable pipe location in high-vibration and high-heat conditions * Bayonet tips hold hanger bushings in place for an OE-style fit * Several versions convert OE single exhaust to dual exhausts * Where applicable, incorporates an exhaust valve that uses the OE exhaust valve motor (not included) to regulate exhaust flow * Some systems use a unique resonance chamber to replace the OE muffler; produces a weight savings of up to 15 lbs. * Hi-Tuck design of specific models provide extra ground clearance when using an aftermarket suspension kit Note: Some aFe Mach Force XP systems are "Race Only" products solely for competition use. Their use is limited to closed-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state, and federal laws.

4.46 out of 5 stars ( 37 )

$1,532.00

BMW 325I Parts and Accessories