Huffy Primus BMX Race Frame - Pro XL - 21.25"TT - Red/Black

The Huffy Primus BMX Race Frame delivers elite-level BMX racing performance with a lightweight 6061 T-6 aluminum frame, advanced dropout engineering, and a tool-free chain tensioner system for fast, simple adjustments. Featuring an innovative hidden brake cable cover for easier maintenance, the Primus is an affordable high-end BMX race frame trusted by champions.

The Primus was engineered with one goal in mind: to create a high-performance BMX race frame that delivers elite-level speed while making setup and maintenance easier for riders with podiums on their mind. Every detail was developed using feedback from top BMX racers and expert engineers to simplify the experience off the track without sacrificing stiffness, strength, or performance.

The patent-pending C.A.G.E. (Concealed Appearance Guided External) feature delivers the same clean look as an internally routed brake line, while making full brake swaps possible with just a 3mm hex key. Its easy access lets riders keep backup systems ready for quick replacement between motos without cutting lines, bleeding hydraulics, or rerouting hoses.

The integrated dropout system was designed to simplify wheel and cog changes while maintaining precise brake caliper and wheel position. The dropout plates stay fixed in the frame during swaps, helping maintain wheel alignment and significantly reducing downtime between motos. The Primus chain tensioner system was built for fast, precise trackside adjustments without extra tools or loose hardware. Integrated thumb-wheel adjusters let riders quickly dial in chain tension using nothing more than their fingers.

Built for stiffness, durability, and smooth power transfer, the Primus utilizes a T47 bottom bracket that delivers reliable performance under hard riding and repeated gate starts. The oversized threaded design supports larger bearings and spindle options while keeping the system easy to service.

*This is a frame only. Spec is posted below for compatibilty reference only.

Use: BMX Racing
Frame Material: 6061-T6 Aluminum
Wheel Size: 20"
Bottom Bracket Type: T47 External Bearing
Brake Type: Hydraulic Disc Brake
Brake Mounting: Post Mount
Headset Type: IS42 / IS52
Seat Post/Seat Clamp Diameter: 27.2 mm / 31.8 mm
Brake Rotor Size: 140 mm
Rear Axle Compatibility: 15 mm Plates Included (20 mm & 10 mm Available Aftermarket)
Outside-Outside Axle Length: 141 mm
Max Tire Width (ETRTO): 1.95" (50-406)

Top Tube: 21.25"

Head Tube Angle: 74°

Seat Tube Angle: 72°

Chainstay Length (to center): 15"

BB Height: 284mm (11.2")

Seat Tube Length: 9.25"

Head Tube Length: 4.725"

Posted Weight: 4lb (1830g)

Color: Red / Black