Prism Supply Co. Petcock 90-Degree 1/4" NPT

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.

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 Fuel Reserve Bottle - Premium Aluminum Motorcycle Fuel Carrier

Never run out of fuel on the road. This professional-grade fuel reserve bottle is purpose-built for motorcyclists who demand reliability and quality on long rides.

Key Features

• 30 fl. oz. (887ml) capacity - Enough reserve fuel to get you to the next station
• High-quality seamless aluminum construction - Lightweight yet durable for the rigors of motorcycle travel
• Fuel-resistant O-Ring sealed cap - Prevents leaks and evaporation during transport
• Lacquered interior coating - Protects against corrosion and extends bottle life
• Purpose-built for fuel - Not a repurposed water bottle; specifically engineered for gasoline storage

Specifications

• Height: 10.625"
• Diameter: 3.125"
• Material: Seamless aluminum with protective lacquer
• Country of Origin: USA

Note: Fuel bottle holster sold separately. Check out the Thrashin Supply Fuel Bottle Holster for secure mounting options.

The Prism Supply Co. 1/4" NPT Petcock threads directly into a 1/4" NPT bung on your gas tank for a clean, flush look with no external hardware cluttering your build. A 5/16" diameter hose barb on one end and a built-in fuel filter on the other keep your fuel system tidy and protected. Toggle fuel on and off by rotating the cylindrical piece — the fuel line stays stationary while you do it.

We recommend pairing this with 1/4" fuel line for a snug, leak-proof fit.

Lifetime Guarantee: All Prism Supply Co. petcocks are guaranteed for life. If you ever have an issue, send it back and they'll rebuild it at no charge.

Specifications

• Thread: 1/4" NPT (National Pipe Thread — tapered, seals on tightening)
• Hose barb: 5/16" diameter
• Built-in fuel filter included
• Twist on/off — fuel line does not rotate during operation
• No reserve
• Available in Brass or Stainless Steel

NPT Compatibility Note

Many custom and aftermarket gas tanks use a 1/4" or 3/8" NPT petcock bung. If your tank has a 22mm bung, petcock adapter nuts are available in brass or chrome to convert it to accept 1/4" or 3/8" NPT petcocks.

Available Options

• Brass — warm classic finish, great for polished or raw builds
• Stainless Steel — corrosion-resistant with a clean modern look

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