Supercross BMX | AMX250 Six Bar Race Frame
$ 359.95 - $ 499.95$ 439.95
37 Years of Supercross
Building BMX race frames since 1989 — 8× USA BMX Bike of the Year, 3× Team of the Year, Olympic riders from Tokyo to Paris. Read the full story →
NEW 2026 MODEL FEATURES
DISC OR V-BRAKE
Now all 26" and 29" are set up for V Brake or Disc Brake, all on the same frame, you choose, and if you go Disc Brake, the V Brake Mounts are removable for a super clean look.
ALL NEW SPEEDSTER VERSION
New Speedster model with 135mm rear spacing to run Multi Speed Rear Cogs and a special Removable Derailleur hanger so you can run it Multi Speed or Single Speed - Your Choice - Disc Brake only. 29" only.
All new colorways
We are still doing Black, but have added a Mirror Polish, a Blue Anodize, and Hi-Vis Yellow!
better, stronger material
We now use 6069 High Vanadium on the new AMX250 Frames - it is stronger and lighter than than previous models.
hop-ups are readily available
Don't forget your Supercross BMX Retro Pads, or the Supercross BMX Retro Stem to complete the build.
- Overview
- Specs
- Geometry
Back in 1989 when we started Supercross BMX, the original frame was our 6 bar design. We used this design for over a decade on our Cro-mo and Aluminum BMX race Frames.
When we designed the SX250, we were limited on tube sizes that the Steel Mills were running. We had to solve the problem of frame flex and stiffness, so the extra triangulation was our solution. By lowering the first set of seat stays and adding the second set of stays, we had a frame that was stiffer, faster accelerating, and better handling than the others.
We eventually turned the SX250 into the AMX250, the Aluminum Motocross!! And for our 35 year anniversary, we are bringing them back in Limited Editions and Limited Sizes for the BMXers in all of us that love the historic BMX racing.
All frames will have the 35 Years Behind Bars Retro decals.
And don't forget your Supercross BMX Retro Pads, or the Supercross BMX Retro Stem to complete the build. Who could forget the fork?
Please post pics of your builds and share your serial # on the Supercross BMX Riders Group on Facebook!
Full 6069 T-6 our new High Vanadium Material for extra strength, durability and lighter weight, a double heat treat process from T-4 to T-6 with a final alignment process to ensure a strong and straight frame . The Extra Stiffness, the weight reduction, the speed, the style. the BMX!
Full Heat Treated post-weld construction,
Campy® Style Integrated Headtube,
CNC Machined 68mm Euro BB shell,
27.2 Seat post
31.9 Seat post Clamp ( 20" has built in Clamp ) and the famous 6 bar rear end.
20" are V Brake Only
26" are V Brake Only and Disc Brake Option all on one frame
29" are V Brake Only and Disc Brake Option all on one frame
29" Speedster - 135mm Rear Spacing - And Disc Brake Only ( Dropout has removable Deraiure Hanger fro Single Speed or Multi Speed use. )
Colors are Polished Aluminum , Anodized Turquoise Blue , Hi Vis Neon Yellow or Gloss Black.
Available sizes are Pro XXL 20" ( 21.75" TT ) , Pro 26" ( 22.75" TT ) , Pro 29" ( 23.75" TT ) and Pro 29" Speedster ( 23.75" TT )
Only 35pcs of the Pro XXL 20" and very limited numbers of the 26" and 29" cruisers. And from your serial number, you can tell what number yours is.
As an example: For the Pro XL's it will show the following serial numbers - 250XL001 , 250XL002, 250XL003 etc, and will be on the Left Rear Dropout as the Original Supercross BMX Racing Frames were.
Supercross BMX AMX250 20" Pro XXL -
TT- 21.75"
CS - 15.25"
HAº - 74.5º
BB Height- 11.625"
V Brake Only
Supercross BMX AMX250 26" Pro -
TT- 22.75"
CS - 15.7"
HAº - 71.5º
BB Height- 11.625"
V Brake Only
Supercross BMX AMX250 29" Pro -
TT- 23.75"
CS - 17.7"
HAº - 71.5º
BB Height- 11.625"
Disc Brake Only
B
UPS damaged my frame and fork but bill was fast to have it replaced A+
I can't wait to build this thing!!!! Pic is of my 26 I ordered also
G
Beautiful frame, great packaging and fast shipping
J
I can’t wait to build up this frame! It looks amazing and is untra lite!
A
Another quality Supercross product with exceptional international customer service
Thank you for your kind words! We're glad you love the AMX 250 Speedster and appreciate your support.
A
Super good quality and way lighter than I was expecting cannot complain one bit
Hi there! We're thrilled to hear you're happy with the AMX250 Speedster. Thanks for your fantastic review!
D
SuperCross is amazing. Their bikes, their parts, and their customer service. I only buy SuperCross unless they are out of stock. Shipping is quick and over never, once, had an issue. Can’t say more good things.
Oh, and the AMX 250 and the SX 250 are the best bike frames ever made. Get one. 🫶🏻
C
Beautiful frame! Great service and super fast shipping!
B
You guys totally rock out! 🤟🏼
b
Supercross BMX | AMX250 - 35 Year Anniversary BMX Race Frame - The Six Bar
B
Love the frame. Well built and looks greats. Will be a addition to my frame collection.
D
The scratch on the headtube tainted an otherwise stellar review. But the price was right, so I won't complain. Finding a vintage example would be impossible at this price, so I will take the slight scuff.
D
This is the third Supercross frame I have purchased within the past two years, ENOUGH SAID! 👍🏾
B
Best frame I ever built
D
I love it
R
Did not receive hardware for seat and brake cable frame guid monts
T
Very pleased to have acquired a frame. I'll have to fork soon.
R
Supercross BMX | AMX250 - 35 Year Anniversary BMX Race Frame - The Six Bar
E
The geometry for this frame is exactly what I had been looking for.
B
Quick shipping and the frame looks amazing.
I
Great frame! Arrived quickly