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Circuit Hero high pressure radiator cap uses a 1.3 kgf/cm² spring to increase your coolant/antifreeze boiling point and protect your engine. An added bonus we've incorporated is the built-in button valve. To ensure there is no hot heat pressure built up, always press the...

  The Circuit Hero Type-C shift knob is made of hard Polypenco polymer, preventing from getting hot on summer days and cold on winter mornings. Thin body design allows for easy side grip.  White color for easy spotting. Also available in black. SPECS: 100mm...

Universal horn button. Original old school Circuit Hero from 15 years ago. Rich vibrant colors with reflective foil logo. Fits most aftermarket steering wheels with 52-58mm opening. Includes Wiring for both single and two prong horn steering wheels. Adapter ring for larger style opening. ***Product...

  The Circuit Hero Type-D shift knob is made of lightweight aluminum. Offered in anodized satin silver or black. SPECS: 22mm bottom opening for cars with reverse lockout lever! 70mm tall Narrow 35mm diameter (at top) tapering down to 23mm (at lower) Lightweight 116grams THREAD PITCH...