550-1028 S&S black full exhaust Diamondback Harley FLHXS1868 Street Glide SP 114 Arctic Blast LE ABS 2021

The S&S CYCLE Diamondback 2:1 black full exhaust system for Harley Davidson FLHXS 1868 ABS Street Glide Special 114 Arctic Blast Limited 2021 is engineered for maximum power and performance on Milwaukee-Eight engines. Built from full stainless steel, including integrated heat shields, the stepped, oversized primary headers and tuned collector design improve exhaust flow and torque delivery.

Its 4” stainless steel muffler exits before the rear axle, enhancing ground clearance and sporty aesthetics. With four O2 sensor ports, it's fully adaptable to both standard and wideband setups. Finished in durable Guardian Black ceramic coating, this system is built to last and perform — proudly Made in the USA.

• Full 2:1 stainless steel exhaust system with heat shields
• Stepped, oversized primaries for optimal flow and performance
• 4” muffler positioned before the rear axle
• Improved torque and engine response on M8 platforms
• Four O2 sensor ports for standard or wideband tuning
• CAD-assisted design and precision bending for maximum ground clearance
• Guardian Black ceramic finish – heat-resistant and long-lasting
• Made in the USA