S&S CYCLE V124" HC EVOLUTION CRATE ENGINE HARLEY DAVIDSON 84-99

S&S CYCLE V124" HC EVOLUTION CRATE ENGINE HARLEY DAVIDSON 84-99

• For '84-'99 Evolution Big Twin or '70-'99 custom chassis with alternator-style primary
• Specially machined cylinder heads allow use of stock-length manifold
• Crank and case machined for crank position sensor (EFI compatible)
• Made in the USA

Included with This Engine

• S&S cylinder heads
• S&S valve springs
• Forged rocker arms
• 640 cam
• Three-piece flywheel assembly
• 1.671" diameter crankpin
• 0.927" wristpins
• High-volume high-pressure oil pump
• Electric compression releases
• Forged pistons

Separately Required — Not Included

• Performance carburetor — required; existing carb can be used with re-jetting
• Performance ignition — required (as stated by S&S)
• ⚠️ CONFIRM: Verify with your installer whether oil lines, primary components, or chassis hardware are needed

Tuning & Ignition

• Performance ignition required — not included
• Performance carburetor required — existing carb usable with re-jetting; EFI bolt-in also supported
• ⚠️ CONFIRM: Professional dyno tuning is essential for this high-compression engine — confirm scope with your installer

Installation Scope

• Fits '84-'99 Evolution Big Twin or '70-'99 custom chassis with alternator-style primary
• Compatible with stock and aftermarket EFI, carburetor, or air cleaner
• ⚠️ 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-'99 custom chassis
• You have a performance carburetor and performance ignition sourced (both required, not included)
• You have a qualified installer and tuning plan in place
• You understand current lead time and warranty terms

Contact us to confirm compatibility and availability before purchasing.