Sportster '88-21

34 products

Shop the range of aftermarket motorcycle fuel & air system products at Pro Class Custom Parts.

$200.99

* K&N’s replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. * These filters are washable and reusable and are custom designed to...

ARLEN NESS

$874.99

Features & Benefits:- * USA Made High Flow Air Filter Element is water Resistant eliminating the need for a Rain Sock. * Synthetic Filter material never needs oil, just wash and re-use for lon...

ARLEN NESS

$577.99

Features & Benefits:- * Styling inspired by the HD Prodigy wheel * Forged billet construction * Clear polycarbonate window face * High flow, pre-oiled, black filter element * Ergonomic design ...

ARLEN NESS

$577.99

Features & Benefits:- * Styling inspired by the HD Prodigy wheel * Forged billet construction * Clear polycarbonate window face * High flow, pre-oiled, black filter element * Ergonomic design ...

$795.99

Features & Benefits:- * The Air Stinger takes the existing high flow Stealth air cleaner and replaces the air smoothing stinger with a similarly shaped filter element. More filter surface equa...

$794.99

Features & Benefits:- * The Air Stinger takes the existing high flow Stealth air cleaner and replaces the air smoothing stinger with a similarly shaped filter element. More filter surface equa...

$771.99

Features & Benefits:- * 85% of original size. * Classic Teardrop look. * Machined openings provide additional air flow. Tech Tips:- * Fuel Mixture Calibration is Advised. Proudly Made in the U...

$771.99

Features & Benefits:- * 85% of original size. * Classic Teardrop look. * Machined openings provide additional air flow. Tech Tips:- * Fuel Mixture Calibration is Advised. Proudly Made in the U...

$719.99

* 85% of original size. * Classic Teardrop look. * Machined openings provide additional air flow. Tech Tips:- * Fuel Mixture Calibration is Advised. Proudly Made in the USA by S&S Cycle MFR ...

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$718.99

Features & Benefits:- * 85% of original size. * Classic Teardrop look. * Machined openings provide additional air flow. * Fuel Mixture Calibration is Advised. MFR PART No: 170-0450 ROLLIES P...

$706.99

Features & Benefits:- * Includes High Flow Element. Tech Tips:- * Replacement Air Filter Element # KN-E-3226 * Rain Sock Not Applicable. * Fuel Mixture Calibration is Advised. Proudly Made in ...

ARLEN NESS

$646.99

The Monster Sucker is a 90° performance air cleaner that features a massive forward facing filter design and our patented hidden breather backing technology for a reliable intake that enhances the...

ARLEN NESS

$646.99

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ARLEN NESS

$641.99

Features & Benefits:- * Forward facing 90° velocity series intake * Aggressive short length intake tube engineered to significantly increase airflow without sacrificing leg room * Patent hidde...

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ARLEN NESS

$641.99

Features & Benefits:- * Significant improvements in performance. * 65 degree angle Design allows extra clean air flow. * Additional Knee Clearance. * Stainless jacketed water resistance filte...