Harley-Davidson Sportster

This Twin Power front brake rotor is a direct OE-style replacement with a floating stainless rotor and a lightweight carrier. The mesh surface patt...

This Twin Power front brake rotor is a one-piece solid stainless OE-style replacement. The drilled surface pattern helps shed heat and clear water ...

This Twin Power front brake rotor is a one-piece solid stainless OE-style replacement. The mesh surface pattern helps shed heat and clear water for...

This Twin Power front brake rotor is a direct OE-style replacement with a floating stainless rotor and a lightweight carrier. The drilled surface p...

This Twin Power front brake rotor is a direct OE-style replacement with a floating stainless rotor and a lightweight carrier. The mesh surface patt...

This Twin Power front brake rotor is a direct OE-style replacement with a floating stainless rotor and a lightweight carrier. The drilled surface p...

This Twin Power front brake rotor is a direct OE-style replacement with a floating stainless rotor and a lightweight carrier. The mesh surface patt...

Twin Power Shocker batteries are endurance and laboratory tested for long, reliable performance in a heavy-duty OEM-style case. Absorbed Glass Mat ...

Twin Power Shocker batteries are endurance and laboratory tested for long, reliable performance in a heavy-duty OEM-style case. Absorbed Glass Mat ...

Twin Power Shocker Gel batteries use nano-gel technology in a heavy-duty OEM-style case for long, reliable starting performance. The gel electrolyt...

Twin Power High Performance batteries are made in the USA and supplied factory activated, filled, sealed, and charged. Absorbed Glass Mat construct...

Twin Power High Performance batteries are made in the USA and supplied factory activated, filled, sealed, and charged. Absorbed Glass Mat construct...

Twin Power Premium MAX batteries are made in the USA with Absorbed Glass Mat construction in a heavy-duty OEM-style case. Factory activated and sea...

Twin Power Premium MAX batteries are made in the USA with Absorbed Glass Mat construction in a heavy-duty OEM-style case. Factory activated and sea...

The Progressive 412 Series is a double-wall steel body shock with nitrogen-charged, multi-stage velocity-sensitive valving for smooth, consistent d...

The Progressive 412 Series is a double-wall steel body shock with nitrogen-charged, multi-stage velocity-sensitive valving for smooth, consistent d...

This fork lowering spring kit lowers the front end while preserving progressive-rate spring performance. Combined with shorter-than-stock rear shoc...

Progressive Suspension's Drop-In fork lowering kits turn a messy, time-consuming job into an easy 30-minute install. Pull up to two inches out of t...

The original progressive-rate fork springs soak up small road chatter while staying firm enough to absorb hard hits. Spring rates are matched to th...

The original progressive-rate fork springs soak up small road chatter while staying firm enough to absorb hard hits. Spring rates are matched to th...