MID-USA CUSTOM SPRINGER FRONT END

BRING THE OLD SCHOOL STANCE BACK WITH A MODERN DAY OLD SCOOL DESIGN.

Fully assembled custom style springer front end. Project-ready for Harley-Davidson Big Twin and Sportster applications. Genuine Mid-USA components.

MID-USA PART NUMBER

CONFIGURE YOUR SUSPENSION KIT

Select your kit type then your finish

Kit typeFinish

• Rocker grease fittings.
• Fully assembled with a forged in-line top bracket without a built-in rake.
• The standard length springer (24” measured from the bottom bearing to the axle center) is comparable to a standard length FXST front end.
• 1” O.D. steering stem designed for Timken® type bearings.
• Both rear legs are threaded for right or left brakes.
• 1” O.D. front legs.
• Forged rockers for superior strength.
• Rear legs are 1 piece from the rocker to the top tree.
• The 3/4” O.D. axle kit includes a brake mount pivot with thrust washer and hub spacers (custom spacers may be required depending on the wheel used).
• Measures 9 1/4” between rockers.
• Riser mounts are on 4 3/4” centers and threaded 1/2-20.
• Includes 3/4” axle with all spacers.

WORKSHOP NOTES

An original Harley-Davidson Springer front end uses stationary rear legs attached to the frame neck and a moving front fork linked by pivoting arms called rockers, with large exposed compression springs to absorb bumps.

HISTORY AND EVOLUTION

• Early Era: Classic springers date back to Harley's early side valve models, including the I-beam springers used from 1930 through 1936, and later post-war designs like the 1948 Panhead. • Modern Revival: Harley-Davidson brought back and redesigned the iconic Springer Softail (FXSTS) in 1988 for its 85th anniversary. • Later Models post-1948 hydraulic forks: The retro Heritage Springer (FLSTS) debuted in 1997, and the line eventually concluded with models like the 2011 Crossbones.

DESIGN AND MECHANICS

• rigid lower leg sprung rocker arm two coil springs • firm direct ride distinctive profile

MAINTENANCE AND RIDE

• periodic greasing Zerk fittings • firmer than hydraulic forks

COMPATIBLE MODELS

• Big Twins 1949-2017 • Sportsters 1982-2003 Part 36652 • Ironhead • Custom Frames

KEY FITMENT CONSIDERATIONS

• Neck Bearings 1in OD Timken • Axle and Brakes 3/4in OD brake rod right rear 5/8in hole • Handlebar Risers 4-3/4in centers 1/2-20

HOW FORK LENGTH CHANGES ARE MADE

• measured bottom lower triple tree to axle • longer raises front more rake • shorter drops front tightens geometry

CRITICAL SAFETY AND GEOMETRY FACTORS

• confirm fork length for rake and trail • excessive length unsafe handling • torque all pivot pins • professional installation recommended

CORE FITMENT SPECIFICATIONS

• 1in OD steering stem Timken • 3/4in OD axle • 8-3/4in rocker spacing • 4-3/4in riser centres 1/2-20 • brake mount right rear 5/8in • rake 0 degrees

WHEEL AND HUB MOCK-UP CHECKLIST

• confirm hub width 8-3/4in • verify axle diameter 3/4in

FREQUENTLY ASKED QUESTIONS

MODEL FITMENT

Compatible Models