1. Introduction
1.1 Product Overview
The HTTMT Chrome ABS Plastic Bolt Topper Caps are designed to enhance the aesthetic appearance of your motorcycle by covering exposed bolts on the engine, transmission, and other primary components. This kit provides a complete set of 87 chrome-finished caps, offering a clean and uniform look for compatible 2000-2006 Harley Davidson Softail Twin Cam models.
1.2 Package Contents
- One (1) set of 87 HTTMT Chrome ABS Plastic Bolt Topper Caps

The HTTMT bolt topper caps displayed in their clear retail packaging.
2. Safety Information
This product is an aftermarket custom item and is not an Original Equipment Manufacturer (OEM) part. While designed for compatibility with specified models, modifications may be required for proper fitment. Professional installation is recommended. Verify compatibility before purchase to ensure safe and correct application.
3. Installation
Installation of the HTTMT Bolt Topper Caps is straightforward but requires careful attention to ensure proper fit and longevity. No detailed installation guide is included with the product, but the general procedure involves securing the caps over existing bolts.
3.1 Preparation
Ensure the surfaces of the bolts are clean and free from dirt, grease, or debris. This will promote better adhesion of the caps.
3.2 Application
Apply a few drops of silicone adhesive (not included) to the inner stem of each bolt topper cap before placing it onto the corresponding bolt. The silicone acts as an adhesive and can also provide a protective barrier against heat for caps installed on engine components.

A selection of chrome bolt topper caps, with some inverted to show their hollow underside, indicating where silicone adhesive would be applied.
3.3 Placement
Gently press the cap onto the bolt. For smaller caps, apply even pressure. Some users have found success by using a small, soft-faced hammer with a protective cloth or tape to gently tap the caps into place, ensuring not to crack them.
3.4 Curing
Allow adequate time for the silicone adhesive to cure as per the adhesive manufacturer's instructions before operating the motorcycle.

An assortment of chrome ABS plastic bolt topper caps of various sizes.
4. Maintenance
To maintain the chrome finish and appearance of your bolt topper caps, regularly clean them with a soft cloth and a mild, non-abrasive cleaner. Avoid harsh chemicals or abrasive materials that could scratch or damage the chrome plating. Periodically inspect the caps for any signs of loosening or damage and re-secure or replace as necessary.
5. Troubleshooting
- Caps not fitting or cracking during installation: Ensure you are using the correct size cap for each bolt. Applying even pressure and using a small amount of silicone can aid in fitment and prevent cracking. For smaller caps, a gentle tapping method with a protected tool may be necessary. If caps are cracking, consider applying silicone to the inside to act as a cushion and insulator.
- Caps loosening or falling off: Ensure sufficient silicone adhesive was used during installation and allowed to cure completely. Reapply silicone if necessary.
- Discoloration or melting due to heat: While the caps are made of ABS plastic, prolonged exposure to extreme engine heat can affect them. Applying silicone adhesive to the inside of caps on high-heat areas can provide an insulating layer. Consider using high-temperature silicone for these specific locations.
6. Specifications
| Attribute | Detail |
|---|---|
| Brand | HTTMT |
| Model | USMT247-004-CD |
| Item Weight | 3.2 ounces |
| Package Dimensions | 7.24 x 4.25 x 0.91 inches |
| Material | ABS Plastic |
| Color | Chrome |
| Compatibility | 2000-2006 Harley Davidson Softail Twin Cam |
| Number of Pieces | 87 |
7. Warranty & Support
For product support or inquiries regarding the HTTMT Chrome ABS Plastic Bolt Topper Caps, please contact HTTMT customer service through their official channels. Specific warranty information may vary; please refer to your purchase documentation or contact the seller directly for details.