KB Performance, 3-5/8" big bore piston kit. STD - 48-84 B.T. with 3-5/8 big bore cylinders and strokes from 4-1/4" to 4-3/4" (88" to 98" engines) 2694 Used to remove and install

Used to remove and install the OEM style plug for access to the primary cover adjuster & primary filler plug of Sportsters without damage to the plug

Except H-D FL Trike

No provisions are made for front or rear chain oiling

Perfect for wrapping pipes or mufflers

Note: Available with a series of different mounting point diameters to best suit your specific application

KB Performance, 3-5/8" big bore piston kit. STD - 48-84 B.T. with 3-5/8 big bore cylinders and strokes from 4-1/4" to 4-3/4" (88" to 98" engines) 2694 Used to remove and install3 5 8" big bore piston set. Used with 3 5 8" big bore cylinders with 5. 330" (stock) to 5. 530" (+. 200") length. Use with 4 1 4" stock stroke (88"), 4 1 2" (93"), 4 5 8" (96") to 4 3 4" (98") stroker flywheels. 10. 0: 1 CR. Piston weight 385gr. Piston pin weight 97gr. Head type: Dome Dome 57cc. Compression height 1. 285" Bore 3. 625" (3 5 8"). Stroke 4. 250" to 4. 750" (4 1 4" to 4 3 4"). Rod length 7. 440" Cyl. length 5. 330" (Std) to 5. 530" (+.