Description
S&S Grand National Slip-On Mufflers for Harley Davidson
The Grand National Slip-On Mufflers are a high-performance upgrade designed to enhance both the sound and power of your Harley. These mufflers are renowned for their show-quality finish and feature race-inspired Grand National end caps for a sleek, aerodynamic look. The high-flow perforated baffle allows for an aggressive sound profile while also providing the flexibility to adjust noise levels. Constructed with billet end caps for added durability and style, these mufflers not only improve the aggressive sound but also contribute to excellent horsepower gains.
Features:
- Show-quality finish with billet end caps
- Race-inspired Grand National end caps with high-flow perforated baffle
- Removable dB reducer for customizable sound levels
- Aggressive sound profile with excellent horsepower improvements
- Sold in pairs (excluding RH Sportster and XG models which are sold each)
- Instructions for Harley Touring Twin Cam available here
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Instructions for Harley Touring Milwaukee Eight available here
- Instructions for Softail models available here (excl. FXFB)
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Instructions for FXFB Fat Bob available here
- Instructions for Dyna models available here
- Instructions for RH Nightster available here
Sound recordings:
Note for 2021+ Softail:
These slip-on mufflers have a single O2 sensor port, while Euro 5 Softail models have two. To prevent trouble codes, deactivate the second sensor using tuning software like Vance & Hines FP4 or Dynojet Power Vision. Use part C852-744444 to plug the sensor connection.
Note for 2017+ models: 2017+ Harley models may need replacement muffler gaskets if already equipped. Find replacement gaskets here.
Shipping and Delivery Times:
We process all orders from our warehouse in Falkenberg, Sweden, ensuring prompt shipment. All packages are shipped with DHL.
Understanding Stock Information:
- In stock: In stock at Customhoj, it will ship to you within the time listed. For EU countries, delivery typically occurs within 2–5 business days after dispatch.
- Sold Out: Currently out of stock at Customhoj, but we expect to have it back soon! Please feel free to contact us for information on when the product will be available again.
When purchasing products with multiple variants, the stock status will be automatically updated as you select the specific variant you wish to buy.
Our commitment to timely shipping ensure that you receive your order as quickly as possible.
30-Day Return Policy - No Questions Asked:
If you are not entirely satisfied with your order, whether you need to change sizes or have other concerns, we offer a full 30-day return policy from the day you receive your order. Return shipping costs apply.
Please note that the right to return does not apply to products that are personalized, or manufactured upon order. See our return policy for complete details and conditions.
If you have any further questions or require assistance with your order, please don't hesitate to reach out to us!
If you have any questions about this product we are happy to answer them!
Reach out to us by phone, email or on Facebook below:
Phone: +46 (0) 920 224 878
Email: support@customhoj.com
Olen tosi tyytyväinen ostokseeni.
S&S Grand National Slip-On Mufflers for Harley
Danke für die schnelle Lieferung. Gerne wieder. Ihr seid zu 💯% ig zu empfehlen!!!