S&S Cycle Diamondback 2-1 Race Only Exhaust System For Harley Touring 2017-2025

S&S Diamondback: The New Standard in M8 Racing Induction

The S&S Cycle Diamondback 2-into-1 Race Only Exhaust System for 2017-2025 Touring models represents the 2026 pinnacle of Milwaukee-Eight performance engineering. In the world of high-output V-Twin engines, exhaust scavenging is the key to unlocking hidden potential. The Diamondback utilizes a precision-engineered 2-into-1 collector that creates a vacuum effect, pulling exhaust gases out of the cylinders and allowing the engine to pull in a fresh air-fuel charge more efficiently. This results in the immediate throttle response and massive mid-range torque gains necessary for aggressive 2026 maneuvers. Whether you are outfitting a Road Glide for the track or building a high-compression 131ci monster, the Diamondback delivers the secure, industrial-strength utility that only the racing experts at S&S Cycle can provide.

Aggressive Geometry and Precision Fabrication

What sets the Diamondback apart in the 2026 marketplace is its distinctive upswept megaphone muffler. This design isn’t just for aesthetics; the higher exit point provides significantly improved ground clearance, allowing riders to take advantage of deeper lean angles in the corners. The system is constructed from heavy-gauge steel and features full-coverage heat shields that wrap the headers to prevent thermal discoloration and protect the rider’s legs. The collector and muffler are joined by high-tension springs, a feature borrowed directly from professional racing to allow for thermal expansion without cracking the head pipes. Available in show-quality chrome or a tactical matte black ceramic finish, every Diamondback system is hand-welded and dyno-tested to ensure it meets the rigorous standards of the 2026 performance bagger community.

Expert Installation & Performance Advice

As specialists in high-performance racing systems, we recommend the Diamondback for its “unapologetic” power delivery. Pro Tip: This is a “Race Only” system that significantly changes engine dynamics. To protect your M8 engine from lean conditions in the 2026 heat, you MUST use a Stage 1 or Stage 2 ECU recalibration via a ThunderMax ECM or Dynojet Power Vision. Installation Note: This system includes both 12mm and 18mm O2 bungs, making it the perfect companion for the ThunderMax Auto-Tuner wideband sensors. Maintenance Note: Periodically check the collector springs for tension; if they appear stretched after a season of 2026 racing, replace them to prevent exhaust leaks. Safety Note: This system is designed for high-clearance; ensure your saddlebag supports are properly aligned to prevent heat transfer to the bottom of the bags during long 2026 tours.

The Professional Standard for Competitive Bagger Power

Choosing the S&S Cycle Diamondback 2-into-1 Exhaust means investing in unmatched acoustic authority and mechanical integrity. It offers a unique combination of modern racing geometry and a raw, thundering bark that honors the legendary lineage of S&S Performance. For the rider who wants a high-output 2026 presence and a flawless engineering finish, the S&S Diamondback is the unmatched leader. Bolt it on, feel the torque, and ride the distance.

Features

• 2-1 full stainless system (with shields)
• Oversize header primary tubes for optimum flow and performance
• Just enough length to make big power on your M8
• Four bungs for easy O2 sensor installation and air/fuel monitoring
• Computer aided design and precision bending for improved ground clearance