Est. delivery Thu, 15 May - Wed, 28 MayEstimated delivery Thu, 15 May - Wed, 28 May
Returns:
30-day returns. Buyer pays for return postage. If you use an eBay postage label, it will be deducted from your refund amount.
Condition:
Brand NewBrand New
79cc have 1.940" intake and 1.575" exhaust valve and springs for up to. 650" lift (unless noted); 89cc have 2.000" intake and 1.605" exhaust and. 640" springs. 79cc heads accept OEM rocker boxes. Heads include four long headbolts, and reuse four long OEM headbolts.
For street performance use they are ideal. With 583-585 S&S cams not necessary to machine/grind valve reliefs on pistons. That alone should be enough incentive to use these heads. The added compression ratio is good for a few ponies.