RSX Racing Solutions

We design and supply high-performance drivetrain parts engineered for competition use. Our range includes close-ratio gear kits, forged flywheels, race clutch kits, final drives, limited-slip differentials, driveshafts, and 184 mm sintered clutch discs — all tested in rally, circuit, hill climb, and endurance racing.

Built from premium materials like CrMo steel and 6061‑T6 aluminum, our components are heat-treated and track-proven for reliability under extreme load and high RPM. Available for a wide range of platforms including Renault, Peugeot, Porsche, BMW, VAG, Toyota, Mitsubishi, Suzuki, and more.

Engineered to perform. Proven to win.

Close Ratio Gear Set for PSA BE4R – Built for Maximum Acceleration

Transform your BE4R gearbox into a precision tool. This close-ratio gear kit drastically reduces RPM drop between gears, delivering continuous power, sharper throttle response, and improved corner-exit speed — essential for competitive rally, hill climb and circuit use.

Machined from high-grade steel, shot-peened and heat-treated, with optimized gear profiles for high torque and durability under racing stress. Plug & play with OEM casing — no mods required.

Race-proven. Track-tested. Performance guaranteed.

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Close ratio gear set PSA BE4R gearbox

€2.018,50
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Limited-Slip Differential

High-performance limited-slip differentials engineered for motorsport and rally applications.

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Clutch Kit

High-performance clutch kits designed for motorsport and track use, featuring ultra-lightweight 184 mm and 200 mm assemblies for improved engine response and durability under stress

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Renault JH3/JB3 gearbox Torsen | CIRCLIP closed LSD

€1.045,00
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Final Drive

High-performance final drives engineered for motorsport and rally applications.

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Close Ratio

Close-ratio gear kits engineered for high-performance applications in circuit and rally use.

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RSX Racing Solutions

Ø 7.25" / 184mm Flywheel Renault Clio II RS (60-2 trigger wheel)

€346,50
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ULW/LW Flywheels

Ultra-lightweight flywheels crafted from forged Chromoly steel and precision heat-treated to reduce inertia and enhance throttle response.

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Blog

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  • All about our aluminium cast cover for PSA BE gearbox

    All about our aluminium cast cover for PSA BE g...

    Have you ever wondered about the differences between the original metal cover and a cast aluminum one?  Let's dive into the comparison, specifically focusing on the BE gearbox in all...

    All about our aluminium cast cover for PSA BE g...

    Have you ever wondered about the differences between the original metal cover and a cast aluminum one?  Let's dive into the comparison, specifically focusing on the BE gearbox in all...

  • difference between differentials bmw 188 188l 188k

    Everything you need to know about BMW's 188mm, ...

    The 188 or 188mm differential is found on chassis like E28, E30, E32, E34, E36, in turn, 188k on E39, E46, E53, and the more modern models like E86, E90,...

    1 comment

    Everything you need to know about BMW's 188mm, ...

    The 188 or 188mm differential is found on chassis like E28, E30, E32, E34, E36, in turn, 188k on E39, E46, E53, and the more modern models like E86, E90,...

    1 comment
  • Step and Pot type Flywheel

    Step and Pot type Flywheel

    Stepped Flywheel On a Stepped or Step-Type flywheel, the friction surface is raised 0.100" or 2.54 mm from the clutch mounting surface, and the inner sides of the clutch cover...

    Step and Pot type Flywheel

    Stepped Flywheel On a Stepped or Step-Type flywheel, the friction surface is raised 0.100" or 2.54 mm from the clutch mounting surface, and the inner sides of the clutch cover...

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RSX Racing Solutions

BMW 135i/235i/335i ULW Torsen | Gear-type LSD

€1.210,00
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from 2 reviews

5.67 - 12x68 Final Drive for PSA BE4R gearbox

Klem Viktor
5.67 - 12x68 Final Drive for PSA BE4R gearbox
5.67 - 12x68 Final Drive for PSA BE4R gearbox

Gearbox cover 5th gear for PSA BE gearbox

JORGE GRANADO
5th gear aluminum casing for PSA BE 5-speed gearboxes
5th gear aluminum casing for PSA BE 5-speed gearboxes

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