Even when coolant begins to heat up, pressure begins to build inside the radiator.  BLOX Racing’s high pressure radiator caps ensure that this pressure is properly relieved so excess heat is spent and fluids flow into the overflow tank.

Standard caps are designed to open at 1.1 bar, but BLOX Racing’s 1.3 bar caps are able to withstand the increases in heat and pressure and prevent the radiator from overheating. BLOX Racing radiator caps are rated 1.3 bar and greatly increase your radiator’s cooling efficiency and performance.



  • 88-91 Honda Civic/CRX
  • 92-01 Honda Prelude
  • 2016+ Honda Civic 1.5T
  • 2017+ Honda Civic Type-R
  • 90-93 Acura Integra
  • 03-07 Mitsubishi Evolution VIII, IX
  • 08+ Mitsubishi Evolution X
  • 02+ Subaru WRX, STi


BLOX Racing’s newest turbo manifold is available for Mitsubishi’s Evolution VIII and IX.

The T304 stainless steel, tubular manifold is designed to replace the OEM cast, log manifold.

Our Big Tube manifold features larger diameter tubing and longer runners that provide increased volume and efficiency. Even though the Big Tube manifold features larger tubing, it is designed to fit within the stock frame and accommodates the OEM turbo up to the largest, modified stock frame offerings.

Can fit up FP Zero and supports over 700whp.


BLOX Racing DR Spherical shift knobs are CNC-machined from industrial-grade polyoxymethylene. This engineered thermoplasic provides high strength stiffness, low friction and excellent dimensional stability. The inside base of each shift knob is counterbored and is designed to accommodate reverse lock-out levers.

Specially designed BLOX Racing shift knob bands, in black and chrome, are included to put your own final touch on your new shift knob.  Offered in black and white Delrin and available in 10×1.5, 10×1.25 and 12×1.25 thread pitch.

Sphere diameter: 49mm
Base outside width: 33mm
Base inside width: 25mm
Height: 57mm
Weight: 91 grams

[CLICK HERE] to see BLOX Racing’s entire line up of shift knobs.


BLOX Racing is proud to add new items into its performance induction and DIY product categories.

New high performance products include heavy duty and MLS stainless steel gaskets, including high-boost shaft seals for OEM Mitsubishi Evolution VIII, IX throttle bodies. Many of BLOX Racing’s new gaskets are universal which can be used in any application with matching bolt holes and specs.

However, BLOX Racing is also releasing specially designed products for Honda S2000; Mitsubishi Evolution VIII, IX; Toyota 86/Subaru BRZ (FA20); WRX and STi (EJ20,EJ25). Certain, new products are pictured below.

Heavy duty replacement gasket for Evo8 & Evo9 OEM throttle body

High boost shaft seals for Evo8 & Evo9 OEM throttle body

2″ 2-Hole MLS exhaust gasket

3″ 2-Hole MLS exhaust gasket

S2000-spec 2.75″ 3-Hole catalytic converter gasket

38mm external wastegate stainless steel gasket

Subaru EJ20/EJ25 Exhaust manifold to Crossover pipe MLS gasket

Subaru EJ20/EJ25 Intercooler inlet gasket

Subaru EJ20/EJ25 Intercooler BOV gasket

Subaru-spec 60mm exhaust donut

Subaru-spec 60mm exhaust collector flange

Subaru dual-fit 2.25″/2.5″, Universal 2-Hole exhaust gasket

Subaru dual-fit 2.25″/2.5″, Universal 2-Hole MLS exhaust gasket