TC Bros Threaded Steel Bungs - Standard (5/16-18 & 3/8-16)
Regular price
$27.95
🚚 Free Canada-wide shipping on orders over $199
Premium TC Bros Threaded Steel Bungs - Standard Style
TC Bros standard threaded steel bungs are essential fabrication components for custom motorcycle builds. These precision-manufactured bungs provide secure, threaded mounting points for gas tanks, seat pans, fenders, battery boxes, and countless other components. Available in two thread sizes and three lengths to accommodate various mounting applications.
Available Options:
Thread Sizes: 5/16-18 or 3/8-16 Lengths: 1/2", 1", or 1.5"
5/16-18 Thread / 1/2" Long - Compact size for tight spaces and lighter components
5/16-18 Thread / 1" Long - Standard length for most applications
5/16-18 Thread / 1.5" Long - Extended length for thicker materials or additional thread engagement
3/8-16 Thread / 1/2" Long - Larger thread for heavier components in compact spaces
3/8-16 Thread / 1" Long - Most popular size for general fabrication
3/8-16 Thread / 1.5" Long - Maximum strength for heavy-duty applications
Key Features:
Precision Threading - Clean, accurate threads for reliable fastener engagement
Standard Design - Flat base for welding to flat surfaces and tubing
Multiple Sizes - Six configurations to match your specific needs
Quality Steel Construction - Durable materials for long-lasting performance
Professional Quality - Manufactured to TC Bros' exacting standards
Versatile Applications - Suitable for countless mounting scenarios
Common Applications:
Gas tank mounting
Seat pan mounting
Fender mounting
Battery box mounting
Tool box mounting
Sissy bar mounting
Luggage rack mounting
Accessory mounting points
Custom fabrication projects
Other Fabrication Hardware Options:
Depending on your specific application, you might need a different style of bung or mounting solution:
Alternative Bung Styles:
Coped Steel Bungs - Feature a curved notch that fits flush on round tubing for a professional, finished appearance. Perfect when welding to frame tubes or round bars.
Counterbore Steel Bungs - Designed specifically for socket head bolts with a recessed counterbore that allows the bolt head to sit flush. Ideal for clean, low-profile installations.
Radius Style Steel Bungs - Feature a radiused base for improved weld penetration and strength. Best choice for high-stress applications.
Non-Threaded Mounting Solutions:
Weld-On Steel Mounting Tabs - When you need to mount brackets, fenders, or accessories without threaded fasteners, our mounting tabs provide secure weld-on mounting points in 7 different styles.
Specifications:
Material: Steel
Thread Sizes: 5/16-18 or 3/8-16
Lengths: 1/2", 1", or 1.5"
Style: Standard (flat base)
Finish: Raw steel (ready for welding and finishing)
Perfect For:
Custom motorcycle frame building
Chopper and bobber builds
Cafe racer and tracker conversions
Vintage motorcycle restorations
Accessory installations
Frame modifications and upgrades
Professional fabrication shops
DIY custom builders
Installation Notes:
These bungs are designed to be welded onto your motorcycle frame, gas tank, fenders, or other components at the desired mounting location. Proper positioning and alignment are critical for correct fitment and function. We recommend:
Test-fit components before welding bungs in place
Ensure proper clearance for fasteners and moving parts
Use appropriate welding techniques for your material
Clean and prep mounting area before welding
Paint or powder coat after installation to prevent rust
Use correct thread size for your application (5/16-18 for lighter components, 3/8-16 for heavier)
Professional installation is recommended if you're not experienced with welding and frame fabrication. Each TC Bros steel bung is precision-manufactured to exacting standards for reliable performance on your custom motorcycle build.
TC Bros Universal Frisco Gas Tank Mounting Kit - Stainless Hardware with Tophat Bungs
Regular price
$56.95
🚚 Free Canada-wide shipping on orders over $199
TC Bros Universal Frisco Gas Tank Mounting Kit
Mount your gas tank with confidence using this complete Frisco-style mounting kit. Everything you need for a professional, secure installation on custom choppers and bobbers.
Complete Kit Includes
3/8-16 stainless steel button head bolts - Corrosion-resistant hardware for long-lasting durability
1018 mild steel tophat bungs - Precision-engineered weld-on mounts for secure tank attachment
Leather cushion washers - Protect your tank finish and dampen vibration
Stainless steel washers - Complete the professional installation
Key Features
Universal Frisco-style design - Classic mounting solution for custom gas tanks
Premium materials - Stainless steel fasteners resist rust and corrosion
Complete hardware package - No need to source individual components
Professional finish - Button head bolts provide a clean, low-profile look
Vibration dampening - Leather washers protect tank paint and reduce metal-to-metal contact
Applications
This mounting kit is ideal for custom motorcycle builders working on choppers, bobbers, and cafe racers. The Frisco-style mounting system is a time-tested solution that provides secure tank attachment while maintaining the clean lines of a custom build.
Installation Note: Tophat bungs require welding to the frame. Ensure proper fitment and alignment before welding.
TC Bros.-Leather Cushion Washers with 3/8 inch Hole 10 pack
Regular price
$13.95
🚚 Free Canada-wide shipping on orders over $199
Leather Cushion Washers with 3/8 inch Hole 10 pack
These leather washers are perfect for protecting your paint and are more durable than rubber. The cushioning & dampening effect that these washers provide is perfect for installing between your frame and mounting tabs found on gas tanks, fenders, oil tanks, or anything else you want to protect from vibration. Also great for use under solo seat springs to prevent squeaking. Dimensions are 1 inch diameter x 3/8 inch hole x 1/8 inch thick. Sold in pack of 10 washers.
TC Bros - Heavy Duty Oil Tank Mounting Kit
Regular price
$97.95
🚚 Free Canada-wide shipping on orders over $199
Heavy Duty Oil Tank Mounting Kit
Use this kit to mount TC Bros. Oil Tanks to our Sportster Hardtail.
Can also be used for universal applications. Made in USA
TC Bros - Weld On Solo Seat Mount
Regular price
$77.95
🚚 Free Canada-wide shipping on orders over $199
Weld On Solo Seat Spring Mounts
TC Bros. Choppers pair of Custom Weld on Chopper/Bobber Solo Seat Spring mounts.
Great for torsion style seat springs.
CNC Machined from 1018 cold rolled steel and are ready to weld on. Stainless Steel Studs are 5/16"-18 thread and base is 1" diameter with a 1 1/8" radius coped into the mount. Easily fits 1" and 1 1/4" cross tubes.
Transform your Harley Sportster into a classic hardtail chopper or bobber with this precision-engineered weld-on hardtail kit. Designed for builders who demand quality and performance, this kit delivers a professional rigid frame conversion.
Accommodates 130-150mm tire widths - Versatile fitment for vintage and modern tire sizes
Precision-engineered weld-on design - Professional-grade construction for permanent installation
Complete hardtail conversion kit - Everything needed for a rigid frame transformation
Premium American steel construction - Built to TC Bros exacting quality standards
Classic chopper/bobber styling - Authentic hardtail profile for custom builds
Tire Compatibility
This hardtail kit works with a wide range of tire sizes including:
130mm width tires (130/90, 130/80)
140mm width tires (140/90, 140/80)
150mm width tires (150/80, 150/70)
What's Included
This complete kit includes all necessary components for your Sportster hardtail conversion. Professional welding skills and equipment required for installation.
Important Installation Note: This is a weld-on hardtail kit that requires permanent modification to your motorcycle frame. Professional fabrication and welding experience is strongly recommended. Ensure proper fitment and alignment before welding.
Build Your Dream Bike: Pair this hardtail with TC Bros fenders, sissy bars, and fabrication hardware to complete your custom Sportster build.
