S&S Cycle 170-0636A Tuned Induction Air Cleaners - Chrome engine-gaskets-seals-exhaust-gaskets Double-layer knee system with a

Double-layer knee system with a full-grain leather outer and abrasion resistant inner layer provide increased durability against knee braces

Replaces OEM# 1821201

1999 Triumph Thunderbird Sport

rather than pile up in the seat

S&S Cycle 170-0636A Tuned Induction Air Cleaners - Chrome engine-gaskets-seals-exhaust-gaskets Double-layer knee system with aUses two laser cut and highly engineered tubes merged into a single collector, fed by a pair of high flow air filters directly in the airstream. Bolt on performance: more than twice the filter area compared to the stock intake system. Boosts horsepower and torque across the rpm range using air column inertia and carefully timed gas dynamic pressure waves. Smooth intake tract using carefully selected and tuned lengths to aid performance. High flow,