S&S Cycle 910-0273 Polished Cylinder Set 4-1/8" Bore 124" V-Series Big Twin

The S&S Cycle 910-0273 is a high-performance polished cylinder set engineered for 1984-1999 Harley-Davidson Big Twin motorcycles with 124 cubic inch V-Series engines. This precision-machined cylinder set features a 4-1/8 inch bore and 5.013 inch length, designed to deliver enhanced power and performance for custom engine builds.

Key Features:

• 4-1/8 inch (4.125") bore diameter for 124" displacement
• 5.013 inch cylinder length with 11-fin design
• Premium polished finish for superior heat dissipation and appearance
• Constructed from high-grade aluminum castings with cast-in iron liners
• Machined to extremely close tolerances for optimal piston fit
• Compatible with S&S ported designs for maximum airflow
• Fits 1984-1999 Big Twin engines with stock or S&S cylinder heads

Installation Notes:

S&S 4-1/8 inch pistons are machined to such precise tolerances that individual piston measurement is not necessary. The low-friction coating on the piston skirt makes traditional measurement difficult. Hone cylinders to nominal diameter +/- 0.0005 inch for correct clearance. Professional installation by a skilled technician is required to ensure proper clearances and assembly specifications.

Important: This product is not CARB compliant and not legal for sale or use on California or EPA pollution-controlled vehicles. Made in the USA by S&S Cycle.