Carburetor Metering Blocks and Components

Circle Track Race Car Carburetor Metering Blocks & Components at JJ Motorsports

Maximize fuel control and consistency with premium metering blocks and components from JJ Motorsports, engineered for precise jetting, emulsion tuning, and reliable performance in high-RPM circle track racing. These billet aluminum and OEM-style blocks are designed for Holley 4150/4160 carbs, delivering superior fuel atomization and durability for dirt track, oval, and stock car setups — giving you the edge in long mains and heat races.

Shop top brands like Proform and Holley for race-proven reliability. Whether you're chasing a better holeshot on a slick short track or optimizing fuel curve on a high-bank superspeedway, these metering blocks pair perfectly with our jets & air bleeds or explore rebuild kits to build a carb that stays dialed all season.

Top Circle Track Carburetor Metering Blocks & Components

• Billet Aluminum Carb Metering Block PFM67150C – CNC-machined billet block for 4150 series; improved emulsion and idle circuits for precise tuning.
• Carb Metering Block for 0-80541-1 134-68 – Direct replacement block for Holley 0-80541-1; optimized for circle track alcohol and gas carbs.

Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!