McLeod Clutch Flywheel Counterweight

McLeod Flywheel Counterweight Kits: Precision Balance for Externally Balanced Engines

When you're building or upgrading a performance drivetrain, getting your engine's balance equation right is just as critical as choosing the right clutch. McLeod Racing — a company that has been providing cutting-edge products and industry-leading service to performance automotive, light truck, and racing enthusiasts since 1971 — offers a targeted solution for one of the most common flywheel fitment challenges: the mismatch between a neutral-balanced flywheel and an externally balanced engine.

What Is a Flywheel Counterweight and Why Does It Matter?

Many high-performance engines rely on external balance, meaning they require offset weight on the flywheel (or harmonic balancer) to achieve proper crankshaft balance. If you install a neutral ("zero") balanced flywheel on one of these engines without accounting for that offset, the result is a vibrating, potentially damaging imbalance at speed. Clutch flywheel counterweights bridge exactly this gap.

McLeod flywheel counter balance weight kits are your solution — their weights, when bolted to "0" or neutral balanced McLeod flywheels, turn them into an externally balanced application. This bolt-on approach lets builders spec a neutral flywheel for maximum versatility, then dial in the correct external balance offset at installation time.

Broad Application Coverage: Chevy, Ford, and Chrysler

McLeod offers various bolt-on style counterweights for Chevy, Chrysler, and Ford engine applications. This wide coverage makes the kits a go-to choice for builders working on classic muscle cars, restomod projects, and dedicated race builds across the three major American engine families. Specifically, counterweight kits are available for externally balanced engines including the 1970–90 Big Block Chevy, 1991–2022 Big Block Chevy, 1970–80 Small Block 400, and 1986–97 Small Block Chevy.

Designed as Part of the McLeod Ecosystem

One key detail every builder should know: these weight kits are made to be used in conjunction with McLeod Racing flywheels only. That's not a limitation — it's a quality commitment. McLeod engineers the counterweights to match the precise drilling patterns and material specs of their own flywheel lineup, ensuring a secure, properly torqued fit. The counterweights feature two drilled and countersunk holes, supplied with tapered head socket screws to bolt directly to your McLeod Racing flywheel — no machining, no guesswork.

McLeod Racing is a supplier to Mopar Performance, Ford Motor Company, Roush, and Saleen, and designed the flywheels for the 2000 Cobra R and 2003–2004 Cobras. That OEM-level pedigree carries directly into their counterweight kits: the same engineering discipline that satisfies factory performance programs is behind every bolt-on weight in this lineup.

A Complete Balance Solution

McLeod offers aluminum, steel, nodular, and chromoly flywheels, and the counterweight kits are the natural complement to that flywheel range — giving you the flexibility to run a neutral flywheel and add the correct external balance offset for your specific engine combination. Whether you're refreshing a vintage big-block or building a modern LS swap, McLeod's counterweight kits keep your entire rotating assembly in harmony.

Browse all McLeod flywheel counterweight products above, or explore the full Clutch Flywheel Counterweight category and the complete McLeod Racing brand page for their broader drivetrain lineup.