Est. delivery Wed, 14 May - Wed, 28 MayEstimated delivery Wed, 14 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. Policy depends on postage service.
Condition:
Brand NewBrand New
79cc have 1.940" intake and 1.575" exhaust valve and springs for up to. 640" lift; 89cc have 2.000" intake and 1.605" exhaust and. 640" springs. Not compatible with Twin Cooled heads. Heads are fully assembled with springs and valves.
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.