Super Tire Siper

• Uses standard utility knife blades
• Use 2 to 6 blades at one time
• Billet aluminum handle 
• Contoured nylon base
• Perfect for cutting sipes into tires for motorsports
• Use two hands for stability
• No power source required
• Depth of cut is adjustable by loosening the thumb screws and adjusting to the desired depth
• Initial set of 6 blades is included

Increase Your Tire Traction with Grooves and Sipes

Dirt track conditions shift from wet and muddy to hard and dusty, affecting tire traction. Experienced racers enhance grip by grooving (cutting rubber from tread) or siping (making thin cuts without removing material) tires. These modifications improve traction, heat tires faster, or extend tire life by running cooler, depending on cut size and direction.

Grooving and siping are skills honed through trial and error. Racers log track conditions and cuts to optimize performance. Consult fellow racers or tire manufacturers for advice. Regrooving worn tires can also save costs compared to buying new ones.

The Super Siper tool, with its ergonomic aluminum body and curved nylon base, handles tough tire siping. It uses standard utility knife blades and supports up to six blades, spaced 0.14 inches apart in two groups, with a 5/8-inch gap. Removing center blades adjusts spacing to 0.28 inches. Depth is set via thumb screws, typically 1/8 to 3/16 inches, up to half the tread depth, ideal for dirt or off-road tires.

Applications:
600 Micro Sprints, Lightning Sprints, Sprint Cars, Midgets, Junior Sprints, Karts and more. Sanctioning bodies such as IMCA, Wissota, USRA, USMTS, and UMP allow grooving/siping in specific classes.

Note: When expanded to achieve wider groove widths, the blade produces a more V-shaped groove since only the upper portion of the blade widens. A 5/16" groove width provides straight, parallel sidewalls.