S&S CYCLE V80" EVOLUTION CRATE ENGINE HARLEY DAVIDSON 84-99

S&S CYCLE V80" EVOLUTION CRATE ENGINE HARLEY DAVIDSON 84-99

• Stock-height basic engine — direct bolt-in replacement for aging 80" H-D Evolution engines
• Specially machined cylinder heads allow use of stock-length manifolds
• Made in the USA

Included with This Engine

• S&S performance cylinder heads
• S&S standard oil pump
• Flat top cast pistons
• S&S 585 valve springs
• Forged rocker arms
• 508 camshaft

Separately Required — Not Included

• Fuel system (carburetor or EFI) — use your existing carburetor (re-jetting required) or aftermarket EFI module/tuner
• Ignition system — not included; use existing or aftermarket ignition
• ⚠️ CONFIRM: Verify with your installer whether any oil lines, primary components, or chassis-specific hardware are needed

Tuning & Ignition

• Carburetor not included — use your existing carb; re-jetting is required
• EFI compatible — calibration required via aftermarket module or add-on tuner
• Ignition system not included — use existing or aftermarket ignition
• ⚠️ CONFIRM: Professional dyno tuning strongly recommended — confirm scope with your installer

Installation Scope

• Fits '84-'99 Evolution Big Twin or '70-'90 custom chassis with alternator-style primary
• Stock height — direct bolt-in; no frame modifications required
• ⚠️ CONFIRM: Professional installation strongly recommended — confirm scope with your shop

Manufacturer Warranty

• ⚠️ CONFIRM: Warranty terms not confirmed in product documentation — please verify current S&S Cycle warranty coverage before purchase

Current Lead Time

• ⚠️ CONFIRM: Lead time not confirmed — contact us before ordering to verify current availability and estimated ship date

Pre-Purchase Confirmation

Before placing your order, please confirm the following with our team:

• This engine is compatible with your '84-'99 Big Twin or '70-'90 custom chassis
• You have a fuel system and ignition ready (not included) and a tuning plan in place
• You have a qualified installer lined up
• You understand current lead time and warranty terms

Contact us to confirm compatibility and availability before purchasing.