TwinPower · New
Twin Power 88-Up XL 90-Up Big Twin Vacuum Piston For CV Carburetor Replaces H-D 27585-88
MPN 488783 · Store SKU twp488783
Supplier stock checked 11/8/2026, 5:05:40 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Twin Power™ vacuum piston directly replaces H-D 27585-88 for Keihin CV carburetors on 1988-Up XL Sportster and 1990-Up Big Twin Harley models. Vacuum Piston For CV Carburetor, 44 mm.
Manufacturer fitment & guides
Check 488783 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.