The 5DEV Titanium RGXC Cranks feature two silver titanium arms with black spindle interfaces, shown side by side on a white background—an ideal lightweight choice for BMX riders.

The 5DEV Titanium RGXC Cranks, a pair of metal BMX race crank arms with spindle interfaces and pedal holes, are displayed on a white background.

Two 5DEV Titanium RGXC Cranks in black are shown on a white background, with one upright and the other lying flat, both displaying visible pedal and spindle attachment points.

The 5DEV Titanium RGXC Cranks are displayed side by side on a white background, showcasing their black lightweight titanium design with visible mounting holes at each end.

Close-up of lightweight 5DEV Titanium RGXC Cranks and chainring, showing the crank arm attached to the bike frame.

A silver cylindrical 5DEV Titanium RGXC Crank with grey end caps stands upright against a white background, showcasing a sleek, lightweight design reminiscent of BMX cranks.

The 5DEV Titanium RGXC Cranks, featuring a lightweight metallic design, are displayed side by side on a black reflective surface.

Description

CNC machined and laser welded by a robotic welding system developed by 5DEV's in-house automation team, the RGXC Titanium Crank is the lightest & stiffest BMX race crank on the market.

For over 20 years, the standard in BMX has been Shimano 24mm pinch bolt cranks with steel spindle. Aluminium spindles were deemed too weak for pro level riders, and the industry has always had a shortage of a decent crank for teenagers graduating from square-taper cranks. Q-Factor on a lot of 'Pro' level cranks is as wide as 175mm like the chainstay needs to clear an oversized wheelbarrow tire. It's literally been a game of copy and paste, with no real innovation outside of one or two brands over a twenty year span.

5DEV's crank is 516g with spindle and spider, that's quite a bit lighter than any pro crank on the market. It's over a half a kilo lighter than some of the popular options out there purporting to be the best. The 29mm 7075 aluminium spindle is the same spindle 5DEV use on their pro downhill and Red Bull Rampage bikes, so it's plenty strong for BMX, and has been tested and approved by Romain Mahieu, Rico Bearman, and Nic Long.

Plain and simple, starting at 155mm and ranging all the way to 175mm, the narrow Q-Factor and wide range of sizes creates a true one-size fits all crank that is light enough for kids, and strong enough for pros. CNC machined and robotically laser welded right in San Diego. 100% USA designed and manufactured.

To complete your crank drivetrain, you'll need to grab a 5DEV BMX Spider 8-BOLT 104 BCD

Features

8 bolt SRAM spider interface. You will need a 5DEV BMX 8 bolt 104 BCD spider, or any Quarq 8 bolt power meter spider, to complete the drivetrain.
29mm aluminium spindle. The same 7075 spindle 5DEV run on their pro downhill and Red Bull Rampage bikes, so it is plenty strong for BMX.
155mm through to 175mm. Five lengths cover kids stepping off square taper cranks right through to pro racers, from one crank family.
Narrow Q factor. 152mm with the 118mm spindle or 157mm with the 122mm, well inside the 175mm Q factor on a lot of pro cranks.
516g with spider and spindle. Lighter than any pro crank on the market, CNC machined and robotically laser welded in San Diego.

Specifications

Arm length: 155mm, 160mm, 165mm, 170mm, 175mm
Spindle: 7075 aluminium, 118mm or 122mm
Spindle size: 29mm
Bolt pattern: 8 bolt SRAM interface
Material: CNC machined titanium, robotically laser welded
Weight: 516g with spider and 118mm spindle
Note: Q factor is 152mm with the 118mm spindle and 157mm with the 122mm spindle. Torque spec 50nm. Spider is sold separately: you need a 5DEV BMX Spider 8 bolt 104 BCD, or a Quarq 8 bolt power meter spider. Lifetime warranty.