
1984-2017 Harley Heritage Softail Fat Cat 2:1 Full Exhaust System Harley Davidson
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Enhance your 1984-2017 Harley Heritage Softail with the Fat Cat 2:1 Full Exhaust System, engineered for optimal performance and a commanding sound. This exhaust system improves exhaust flow, boosting horsepower and torque while delivering a deep, aggressive tone that complements your Harley Davidson’s classic style. Crafted for durability and precise fitment, it ensures reliable operation and an unmistakable presence on the road. Upgrade your ride with this expertly designed exhaust system for superior power and iconic Harley sound.
FEATURES
- Extended Muffler Design: Features a longer muffler to perfectly align with the end of the saddlebags for a clean, balanced look.
- Stepped Header System: Precision-engineered headers step from 1 5/8" to 1 3/4" to 1 7/8", flowing into a 2 1/2" collector for maximum exhaust velocity.
- Complete Installation Kit: Includes heat shields, exhaust gaskets, bolt kit, and baffles—everything needed for a hassle-free setup.
- Dyno-Tuned Performance: Each system is tested in-house using Harley Tuners to ensure optimized power output.
- Proven Power Gains: Delivers 8–10% increases in horsepower and low-end torque when properly tuned.
- Built for Durability: Crafted for long-lasting performance with high-quality materials and precision fitment.
- Enhanced Throttle Response: Engineered to improve engine breathing, resulting in better throttle feel and acceleration.
- Louvered baffles are for 80" to Stock 103" motors
- Perforated Wrapped baffles are for Stage 4 103" to 113" motors
- Note: The inter core of the louvered baffle is 2 1/4"
- Note: The inter core of the big boar baffle is 2 1/2"
- Using Woods cams for best performance use the Perforated Wrapped Baffle
- 2:1 Fat Cat comes with 12mm and 18mm O2 sensor bungs.
- Will not fit the 2013-2017 Breakout Softail beacuse of the oil tank.
- At idle, the motorbike is deep, boomy and full of character. Not only does the pipe look good, it is a wonderfully sounding experience for the rider.