S&S CYCLE T124LC Series Long Block Engine 310-0836A

Replace that worn stock engine with a purpose-built long block that delivers substantial low-end torque and reliable street performance. The S&S T124LC's 10.2:1 compression ratio prioritizes real-world rideability over peak horsepower, making it the smart choice for touring and performance applications where usable power matters more than dyno numbers. You'll get factory-backed reliability with a 2-year warranty and Made in USA craftsmanship—no core exchange, no excuses.

This is a complete long block engine ready for your fuel and ignition systems. Installation requires an oil line kit (sold separately), and compatibility with 99-05 style Harley-Davidson cylinder heads means you'll work with proven architecture. The Easy Start gear drive cams reduce starter load, while the high-flow oil pump and specially machined heads ensure consistent cooling and proper manifold fitment with stock-length intake runners.

• Displacement: 124 cu. in.
• Bore: 4-1/8"
• Stroke: 4-5/8"
• Compression: 10.2:1
• S&S forged pistons (dish, 11cc)
• Gear drive cams (585 profile)
• S&S TC3 oil pump
• S&S forged rocker arms
• T2 crankcase
• Stock Twin Cam 96 bolt pattern
• Gloss black rocker covers
• Large cooling fins
• 2-year manufacturer warranty
• Made in USA
• Oil line kit required (separate)
• Not compatible with Softail models
• Not recommended for Tri Glide (3-wheel models)