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Honda CRF 450R GP4R Pro Camshaft + Valve Spring Kit (2021-2026)

CRF450R GP4R PRO BILLET HONDA CAM 2025 2024 2023 2022 2021

SKU: HON-CRF-450-GP4-21B

GP4R Pro Billet Camshaft with DCR Valve Spring Kit for Honda CRF450R 2021-2026

Maximum effort drag racing / flat track cam

Hardened aircraft grade material is CNC'd In-house. The Billet Cores are meticulously hand-ground to perfect surface finish & lobe specifications

power gains of +7 hp.

Comes Complete with bearing & flange

*Not Compatibe With OEM Valve Springs* / WILL NOT FIT OEM PISTON !

Availability: 3-7 DAYS TO SHIP

Pricing: $1,259.00

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Description

NEW Maximum lift Spec for 2026 ! The tallest cam you can find for the honda 450 !

8620 billet core made in usa

328 intake advertised duration
311 exhaust advertised duration

intake cam lift .412" / 276 duration / .472" valve lift
exhaust cam lift .250 / 240 duration .455" valve lift

valve settings .009 " int .014" exhaust

*Requires DCR Valve Springs

*ecu tuning recommended

*wossner race piston - 14.5 or 14.2 compression recomended for extra valve pocket depth for the gp4r camshafts extra exhaust lift