1. Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of your Vance & Hines Twin Slash Round Slip Ons Iron Black 46861 exhaust system. Designed for specific Harley-Davidson Sportster models, these slip-on mufflers enhance your motorcycle's sound and appearance. Please read this manual thoroughly before proceeding with installation or use to ensure safety and optimal performance.
Figure 1: Vance & Hines Twin Slash Round Slip Ons Iron Black 46861 installed on a Harley-Davidson Sportster. This image shows the black finish and the distinctive twin slash end treatment of the mufflers, integrated seamlessly with the motorcycle's aesthetic.
2. Safety Information
Always prioritize safety during installation and operation. Failure to follow these guidelines may result in injury, damage to your motorcycle, or voiding of your warranty.
- Ensure the motorcycle is cool before beginning any work on the exhaust system to prevent burns.
- Wear appropriate personal protective equipment, including gloves and eye protection.
- Secure the motorcycle on a stable stand to prevent it from tipping over during installation.
- Keep all fasteners and components organized to avoid loss.
- Consult a qualified mechanic if you are unsure about any step of the installation process.
- Legal Disclaimer: These slip-on mufflers are NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. Always check your local and state regulations regarding noise and emissions compliance before installation and use.
3. Setup & Installation
This section outlines the general steps for installing your Vance & Hines Twin Slash Round Slip Ons. While installation is designed to be straightforward, attention to detail is crucial.
3.1. Required Tools and Materials
- Wrenches (various sizes, typically metric and/or SAE depending on motorcycle)
- Rubber Mallet (optional, for seating components)
- New Exhaust Gaskets (highly recommended, as stock gaskets may not be reusable or compatible)
- New Exhaust Clamps (essential, as stock clamps are often too small for aftermarket slip-ons)
- Torque Wrench (for proper fastener tightening)
- Cleaning Cloth
3.2. Pre-Installation Checks
- Verify package contents against the packing list. Ensure all components, including heat shields and baffles, are present and undamaged.
- Confirm compatibility with your motorcycle model. These slip-ons are designed for Harley-Davidson Sportster models from 2014-2020.
- Allow the motorcycle's exhaust system to cool completely before starting.
3.3. Installation Steps
- Remove Stock Mufflers: Loosen and remove the clamps securing the stock mufflers to the header pipes. Carefully slide the old mufflers off. You may need to gently twist or use a rubber mallet to free them.
- Remove Old Gaskets: Inspect and remove any old exhaust gaskets from the header pipes. Clean the header pipe ends thoroughly.
- Install New Gaskets: Insert new exhaust gaskets into the header pipe openings. Ensure they are seated correctly.
- Position New Slip Ons: Carefully slide the Vance & Hines slip-on mufflers onto the header pipes. Do not fully tighten any clamps yet. Leave them loose enough to allow for adjustment.
- Install Heat Shields: The mufflers come with full coverage heat shields. Attach these to the mufflers using the provided hardware. It is often easier to adjust the heat shields if the main muffler clamps are still slightly loose.
- Align and Tighten: Once both mufflers and heat shields are in place and properly aligned, begin to gradually tighten all clamps and mounting bolts. Work in an alternating pattern to ensure even pressure. Refer to your motorcycle's service manual or Vance & Hines instructions for specific torque specifications.
- Final Inspection: Double-check all connections for tightness. Ensure there are no gaps where exhaust gases could leak. Wipe down the new exhaust system with a clean cloth to remove any fingerprints or oils, which can burn onto the finish when heated.
Figure 2: An alternative view of the Vance & Hines Twin Slash Round Slip Ons on a Harley-Davidson Sportster, showcasing the overall fit and finish from a slightly different angle.
4. Operation
Your Vance & Hines Twin Slash Round Slip Ons are designed to provide a distinct exhaust note and improved aesthetic. These mufflers feature louvered core baffles pre-installed.
- Sound Characteristics: Expect a significantly louder and deeper exhaust sound compared to stock mufflers. The specific sound profile may vary slightly depending on your motorcycle's engine and other modifications.
- Optional Baffles: If a quieter exhaust note is desired, optional quiet baffles are available from Vance & Hines. Installation of these baffles can alter the sound level and tone.
- Engine Tuning: For most applications, these slip-on mufflers do not require engine tuning (e.g., with an FP3 tuner). However, if you experience significant changes in engine performance or fuel economy, consult a qualified technician.
- Exhaust Odor: Due to the removal of the catalytic converter (if present in your stock system), you may notice a stronger exhaust odor. This is a normal characteristic of aftermarket exhaust systems that bypass emissions control devices.
Figure 3: A full side profile of the Harley-Davidson Sportster equipped with the Vance & Hines Twin Slash Round Slip Ons, illustrating the complete visual integration of the exhaust system.
5. Maintenance
Regular maintenance will help preserve the appearance and functionality of your Vance & Hines exhaust system.
- Cleaning: Clean the black finish regularly with a mild soap and water solution, followed by a soft cloth. Avoid abrasive cleaners or harsh chemicals that can damage the finish.
- Inspection: Periodically inspect all clamps, bolts, and mounting points for tightness. Vibrations from motorcycle operation can cause fasteners to loosen over time.
- Heat Shield Care: Ensure heat shields are securely attached and free from damage.
- Damage Check: Regularly check the mufflers for any signs of physical damage, such as dents, scratches, or cracks, which could affect performance or safety.
6. Troubleshooting
This section addresses common issues you might encounter with your exhaust system.
| Problem | Possible Cause | Solution |
|---|---|---|
| Exhaust Leak / Popping Sound | Loose clamps or improperly seated gaskets. | Check and tighten all exhaust clamps. Ensure new gaskets were installed correctly. If popping persists, consider consulting a mechanic for fuel mixture adjustment. |
| Excessive Loudness / High Pitch | Standard louvered baffles are installed. | Consider installing Vance & Hines optional quiet baffles for a reduced sound level and deeper tone. |
| Heat Shield Rattling | Loose heat shield mounting hardware. | Inspect and tighten all screws and clamps securing the heat shields. |
| Discoloration of Finish | Fingerprints or oils burned onto the finish during initial heat cycles. | Ensure the exhaust system is thoroughly cleaned before the first ride. Some discoloration may be permanent if not cleaned promptly. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Vance & Hines |
| Model Number | 46861 |
| Product Type | Twin Slash Round Slip-On Mufflers |
| Color/Finish | Iron Black (Painted) |
| Vehicle Service Type | Motorcycle (Harley-Davidson Sportster 2014-2020) |
| Muffler Shape | Round |
| Outlet Connection Size | 3 Inches |
| Item Dimensions (L x W x H) | 32 x 16 x 8 inches |
| Item Weight | 9.79 pounds |
| Special Features | Full coverage heat shields, signature twin slash end treatment, louvered core baffles pre-installed. |
8. Warranty & Support
For specific warranty information regarding your Vance & Hines Twin Slash Round Slip Ons, please refer to the documentation included with your purchase or visit the official Vance & Hines website. Warranty terms typically cover manufacturing defects.
If you require technical assistance, have questions about installation, or need to report a product issue, please contact Vance & Hines customer support directly. Ensure you have your product model number (46861) and proof of purchase available when contacting support.
Contact Information: Please visit www.vanceandhines.com for the most current support contact details.