SOMA Rufus Urban Cruiser BMX Frameset 20 Inch
- Size: 16.5 inches
- Item Weight: 15 pounds
- Suspension Type: Dual
- Is Assembly Required: No
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A commuting-focused chromoly frameset for a from-scratch 20-inch build, worth it if you already plan to source your own wheels, drivetrain, and brakes.
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ASIN: B0H58ZJV5WCategory: BMX Bike Frames
Overview
A bare frameset, not a complete bike, built for riders assembling a custom urban commuter around 20-inch BMX wheels. The 4130 double-butted chromoly steel frame and fork are drilled for a rack, fenders, and a fork cargo cage, aimed at city errands and commuting rather than trick riding.
This is frame and fork only, so wheels, drivetrain, brakes, and finishing parts have to be sourced separately. The chromoly build favors ride comfort and load-carrying over the stiffness of an aluminum BMX frame, and the mounts for a rack, fenders, and a fork cargo cage point this at daily transportation rather than park or trick riding. Disc brake tabs are sized for 140mm or 160mm rotors, so buyers need matching calipers and rotors to finish the build.
- 4130 double-butted chromoly frame and fork
- Rack, fender, and fork cargo cage mounts
- Disc tabs for 140mm or 160mm rotors
- Fits 20 x 2.3 inch tires with fender clearance
Who it's for
Riders building a custom 20-inch commuter or cargo-capable city bike from parts, particularly anyone who wants rack and fender mounts a stock BMX frame usually lacks. Not for buyers wanting a ready-to-ride bike or for BMX park and trick riders, since it is not built for that use.
Pros and cons
- Rack, fender, and cargo cage mounts built in
- Chromoly construction rides smoother than aluminum BMX frames
- Multiple bottle bosses for commuting or bikepacking loads
- Sized for riders from 4'11" to 6'3"
- Frame and fork only, no wheels, drivetrain, or brakes included
- Requires the builder to source and match disc brake components
Performance notes
The 4130 double-butted chromoly tubing is chosen for a smoother ride than aluminum BMX frames typically deliver, since the steel flexes slightly to absorb road buzz. Tire clearance covers 20 x 2.3 inch tires plus fenders, so it should accept most 406 ISO street and light trail rubber without rubbing. International standard disc tabs for 140mm or 160mm rotors mean braking performance depends entirely on the caliper and rotor the builder pairs with it.
Specifications
| Brand | Soma |
|---|---|
| Dimensions & fit | |
| Size | 16.5 inches |
| Item Weight | 15 pounds |
| Capacity & performance | |
| Number Of Speeds | 1 |
| Age Range Description | Adult |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Color | Purple |
| Included components | |
| Unit Count | 1 |
| Included Components | BMX Frame |
| Warranty & support | |
| Warranty Description | Limited Warranty |
| Other details | |
| Suspension Type | Dual |
| Is Assembly Required | No |
| Model Year | 2000 |
| Bike Type | BMX Bike |
| Additional Features | Portable |
| Specific Uses For Product | BMX Frame |
Closest rivals on specs
Syndyt 210 Pro XL BMX Racing Frame 21 Inch- Size 16.5 vs 21 inches (-21%)
- Item Weight 15 vs 4.05 pounds (+270%)
Syndyt 205 Pro BMX Racing Frame 20.5 Inch- Size 16.5 vs 20.5 inches (-20%)
- Item Weight 15 vs 3.99 pounds (+276%)
Syndyt 185 Junior BMX Racing Frame 18.5 Inch- Size 16.5 vs 18.5 inches (-11%)
- Item Weight 15 vs 2.8 pounds (+436%)
Frequently asked questions
Does the Soma Rufus frameset include wheels or a drivetrain?
No, this listing is frame and fork only. Wheels, drivetrain, brakes, and other finishing parts must be purchased separately.
What size tires fit the Soma Rufus frame?
It has clearance for 20 x 2.3 inch tires on 406 ISO BMX wheels, with room left for fenders.
What brake setup does the frame support?
International standard disc brake tabs sized for 140mm or 160mm rotors; no rim brake mount is mentioned.