258° cams for fast street 4G63 engines with stock turbo or turbocharger upgrade. Suits upgraded turbo sizing 48-54mm. Improved low to mid-range power and good throttle response. Suits restrictor plate rally 4G63 engines. Broader power band and improved throttle response when using MIVEC.
- For up to 8000rpm and 25psi boost Kelford Cams recommend valve spring KVS63-BK
Additional Information: 258°/264° | 10.50mm/10.50mm
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