Top End Kits

Head Combo, GenX® Top-End, 515 HP/460 ft.-lbs. Torque, Chevy, Small Block, LS1, Kit

Part Number: TFS-K306-515-460

Estimated Ship Date: May 11, 2026 if ordered today

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Head Combo, GenX® Top-End, Chevy, Small Block, LS2, Kit

Part Number: TFS-K306-550-470

Estimated Ship Date: May 11, 2026 if ordered today

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Head Combo, GenX® Top-End, 455 hp/426 ft.-lbs. Torque, Chevy, 5.3L, Kit

Part Number: TFS-K305-455-425

Estimated Ship Date: Today

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Head Combo, GenX® Top-End, 485 hp/460 ft.-lbs. Torque, Chevy, Small Block, LS1, Kit

Part Number: TFS-K306-485-460

Estimated Ship Date: May 11, 2026 if ordered today

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Head Combo, GenX® Top-End, 500 HP/460 ft.-lbs. Torque, Chevy, Small Block, LS1, Kit

Part Number: TFS-K306-500-460

Estimated Ship Date: May 11, 2026 if ordered today

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Head Combo, Rockers, Head Bolts, Intake, Camshaft, Pushrods, Timing Set, Valve Covers, Gaskets, Kit

Part Number: TFS-K514-360350B

Estimated Ship Date: May 6, 2026 if ordered today

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