Lightest Stainless GP Exhaust for the Bonneville SE
The GP Slip-On is British Customs’ most lightweight stainless exhaust — engineered to bring race-inspired sound, modern performance, and handcrafted style to the Triumph Bonneville SE (2009–2016). Built for riders who want more than the standard classic look, this slip-on delivers aggressive performance without sacrificing heritage charm.
Engineered for Performance
Constructed from 20-gauge stainless steel — lighter than the 18-gauge used in our Predator Pro and Sleeper Pro — the GP Slip-On sheds weight while improving airflow. Inside, a high-flow perforated race core replaces heavier louvered designs, boosting throttle response and delivering a sharper, higher-pitched performance tone. Stainless steel packing enhances durability and keeps your exhaust note crisp.
Handcrafted in California
Each GP Slip-On is hand-shaped, rolled, and brushed in our Gardena, CA workshop. Exposed TIG welds showcase true craftsmanship, while rubber-isolated exhaust hangers reduce vibration and prevent fatigue over long rides. A riveted stainless steel end cap makes the exhaust fully serviceable — ready for repacking if needed.
Lightweight Advantage
Weighing just 2.65 lbs per muffler, the GP Slip-On dramatically cuts weight from your Bonneville SE, improving acceleration, handling, and overall ride feel.
Lightest Stainless GP Exhaust for the Bonneville SE
The GP Slip-On is British Customs’ most lightweight stainless exhaust — engineered to bring race-inspired sound, modern performance, and handcrafted style to the Triumph Bonneville SE (2009–2016). Built for riders who want more than the standard classic look, this slip-on delivers aggressive performance without sacrificing heritage charm.
Engineered for Performance
Constructed from 20-gauge stainless steel — lighter than the 18-gauge used in our Predator Pro and Sleeper Pro — the GP Slip-On sheds weight while improving airflow. Inside, a high-flow perforated race core replaces heavier louvered designs, boosting throttle response and delivering a sharper, higher-pitched performance tone. Stainless steel packing enhances durability and keeps your exhaust note crisp.
Handcrafted in California
Each GP Slip-On is hand-shaped, rolled, and brushed in our Gardena, CA workshop. Exposed TIG welds showcase true craftsmanship, while rubber-isolated exhaust hangers reduce vibration and prevent fatigue over long rides. A riveted stainless steel end cap makes the exhaust fully serviceable — ready for repacking if needed.
Lightweight Advantage
Weighing just 2.65 lbs per muffler, the GP Slip-On dramatically cuts weight from your Bonneville SE, improving acceleration, handling, and overall ride feel.
Direct Bolt-On Fit
No cutting or fabrication required — this slip-on uses factory mounting points for a seamless installation with common tools.
Key Features
- 20-gauge stainless steel construction — lighter than 18-gauge designs
- High-flow perforated race core with stainless steel packing
- Hand-shaped, rolled, and brushed finish with exposed TIG welds
- Riveted stainless steel end cap — fully serviceable for repacking
- Rubber-isolated exhaust hangers to reduce vibration
- Only 2.65 lbs per muffler — significant weight savings over stock
- Direct bolt-on fit for Triumph Bonneville SE (2009–2016)
- Handcrafted in Gardena, CA
Warranty & Support
- 1‑Year Limited Warranty: Covers manufacturing defects.
- Expert Assistance: If you encounter fitment issues, contact our team at +1 (877) 999‑BRIT or support@british-customs.com.
