Size Guides

Three numbers decide whether a wheel works in your car: the diameter, the dish, and the bolt pattern. The bolt pattern is the easy one, because almost everything here shares it. The bit that makes this simple: 6 x 70 mm PCDMOMO, OMP and Sparco all drill their wheels on a six bolt, 70 mm […]

Track day helmets are sized model by model, and every size option on the site carries the head measurement inside the name. Measure once, then pick the option whose centimetre range contains your number. The letter on its own will mislead you. Read the number, not the letterA Sparco track day L is a 60 […]

Pit and workshop kit is sized on the same ladders as driver kit, so if you already know your race suit or glove size you know this too. The one thing to watch is that overalls come in two systems: Sparco use letters and OMP use the numeric ladder. Overalls Sparco MS-4 and MS-5, and […]

Kart underwear is sized on your body, the same chest and waist measurements as a kart suit. The complication is that this category uses four different labelling systems, sometimes within the same brand. System Sizes Which products Single letters S, M, L, XL, XXL OMP Padded Shorts, Alpinestars Tech KX, Sparco B-Rookie Paired letters XS-S, […]

Kart boots use exactly the same size ladders as race boots, which means the same trap applies: Sparco and OMP share one ladder and Alpinestars run their own. The same UK size is a different EU number depending on which you buy. Measure the foot Two minutes with a sheet of paper beats any conversion […]