S&S CYCLE T124" HC TWIN CAM A CRATE ENGINE HARLEY DAVIDSON

S&S CYCLE T124" HC TWIN CAM A CRATE ENGINE HARLEY DAVIDSON

Fits 1999–2006 and 2007–2017 Twin Cam A applications. High compression for ultimate street performance.

• High compression: 10.8:1
• 124" displacement | 4-1/8" bore | 4-5/8" stroke
• 640 cam | forged flat top pistons
• Wrinkle black finish

Included with This Engine

• S&S Super Stock cylinder heads
• S&S crankcases
• High-flow oil pump
• Cam cover
• Easy start cams
• Cylinder heads specially machined to compensate for non-stock cylinder length — compatible with stock-length intake manifolds and throttle bodies
• Breather vent bolt locations adjusted to stock position — stock-style air cleaner back plates bolt up

Separately Required — Not Included

• Fuel system (carburetor or EFI throttle body) — not included
• Ignition system — not included
• Oil line installation kit — required (must be purchased separately)
• 1999–2005 style offset intake flanges — required for 2006 model owners (99-05 style heads fitted)
• ⚠️ CONFIRM: Verify with your installer whether any additional chassis hardware or primary components are needed

Tuning & Ignition

• No fuel system or ignition included — use stock or aftermarket carburetor/EFI and ignition
• High compression (10.8:1) demands proper tuning — professional dyno tuning strongly recommended
• ⚠️ CONFIRM: Confirm tuner/ECU compatibility and tuning plan with your installer before purchasing

Installation Scope

• Fits 1999–2006 and 2007–2017 Twin Cam A models
• 2006 model owners must purchase 99-05 style offset intake flanges separately
• Oil line installation kit required — purchase separately
• ⚠️ 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 specific Twin Cam A model year
• You have a fuel system, ignition, and oil line kit sourced (all required, not included)
• 2006 model owners: confirm offset intake flanges are ordered
• You have a qualified installer and high-compression tuning plan in place
• You understand current lead time and warranty terms

Contact us to confirm compatibility and availability before purchasing.