IMCA Modified Parts

If you're running IMCA competition, you need a muffler that meets spec requirements without compromising exhaust flow or durability. The Schoenfeld IMCA609 delivers race-legal sound suppression in a compact design that fits tight engine bay...

Keep your dirt car running at peak performance without the hassle of tearing apart your setup every time you need access to critical components. The Allstar Performance Access Panel Kit (ALL18531) gives you quick, clean entry to fuel cells, dry sump pump...

A full-floating rear end demands a hub kit engineered to handle the abuse of high-performance driving while remaining serviceable in the pits or garage. This 5x5 Grand National hub kit delivers the durability and precision you need, with tapered bearings...

If you're running a dirt Modified, front-end aerodynamics directly impact your competitive edge on the track. Fivestar's modified aero valance delivers the adjustability and precision fit you need without the downtime—bolt it on and focus on setup. Built...

Suspension geometry directly impacts your B-Mod's ability to hook off the line, carry speed through corners, and maintain stability under load. Worn or inadequate lower control arms compromise all three—costing you consistency and lap time. This complete...

Proper air intake is critical for maximizing engine performance, and the Dominator Predator Hood Scoop delivers clean, direct airflow to your engine bay while maintaining a factory-appearance aesthetic. This bolt-on scoop combines aerodynamic efficiency...

Precise rev limiting is non-negotiable in competitive racing—it protects your engine from over-revving while maintaining the split-second response you need on the track. The MSD Digital Soft-Touch HEI Rev Limiter gives you repeatable, adjustable control...

If you're running a Grand National setup with aggressive wheel offsets or extended suspension geometry, stock wheel studs won't cut it. This 5x5 rear wheel hub kit features extra-long 3.75" studs to accommodate custom wheel packages and deep-dish...

Proper rear-end fluid management is critical for maintaining consistent lubrication and cooling during sustained racing. This reservoir filler tank integrates seamlessly into IMCA and USTMS-compliant setups, giving you reliable fluid circulation without...

Maintaining consistent rear-end fluid levels under racing conditions is critical for performance and longevity—this deck-mounted fill tank kit eliminates guesswork and pit-stop delays. The 10 AN push-lock fittings and pre-assembled Aeroquip hose mean...

A secure fuel cell cap isn't just a convenience—it's a critical safety component that prevents fuel spillage, contamination, and vapor loss during high-performance driving. The Allstar Performance 12-Bolt Fuel Cell Cap delivers reliable sealing on JAZ...

Whether you're securing lightweight aluminum panels on a race car, fabricating custom brackets, or assembling sheet metal components, having a reliable fastening solution is non-negotiable. These 3/16" pop rivets deliver consistent, permanent joints...

Wheel hub dust caps are essential protection against contamination that can compromise bearing performance and longevity. The Wehrs GN Hub Dust Cap seals out moisture, dirt, and debris that accumulate during transport, storage, and racing...

Unfiltered air is the enemy of engine longevity and performance. This 14-inch Outerwears air filter wrap uses puncture-resistant polyester mesh to trap sand, dirt, and fine particles before they reach your engine's primary filter—extending filter life...

Fuel pressure consistency is critical for racing performance—too much variation and you're chasing tuning problems across the entire power band. The KSC2005 Bypass Fuel Regulator gives you precise 2-10 psi control with an adjustable idle bleed jet,...

A quality carb hat keeps fuel and contaminants out of your carburetor while maintaining a clean, sealed fuel system—critical for consistent jetting and reliable performance on the track or street. This aluminum design offers a lightweight alternative to...

A roll-over flapper valve is critical safety equipment for any serious racing fuel cell setup—it prevents fuel sloshing and spillage during aggressive cornering, acceleration, and deceleration while maintaining proper fuel delivery under extreme...

Fine-tuning your alcohol-fed Holley carburetor requires precision jetting to dial in the optimal fuel-air mixture for your specific engine combination and track conditions. This comprehensive assortment eliminates guesswork by providing a complete range...

Fine-tuning your Holley carburetor's air-fuel mixture is critical to extracting maximum performance and fuel efficiency. This assortment gives you the complete range of jets you need to dial in your carb without buying individual pieces. Whether you're...

If you're running a Modified at sanctioned tracks, aerodynamic efficiency directly translates to lap time and stability—and Fivestar's 3-piece valance gives you a competitive edge with precision-molded geometry that reduces front-end lift without adding...