About This Product
The Speedco M2 Disc Alloy BMX Race Frame-Black/Gray is designed specifically for disc brakes. In fact, ONLY disc brakes will fit, since there are no brake post mounts on the seat stay. There is a sneaky internal brake cable route with the entrance hole at the front of the top tube and exiting in the back right where your caliper will be. Do not underestimate the sneakiness. Not to worry, there is an included set of drop-out hardware for caliper mounting. This frame is available in the full PRO size range.
Now for a little about Speedco’s M2 frames:
M2 frames are a visual match to their high-end Velox Carbon frame sibling. Like the Velox the M2 is unambiguously engineered for sprinting with high rigidity and a tapered down tube proportional to each individual size. (That is a nice attention to detail which should tell you that Speedco really put some thought into this design.) Unlike the Velox Carbon, this is a 7005 series alloy frame and so is an order of magnitude more affordable.
There are 3 popular bottom bracket standards for BMX – euro, BB30, and BB86. A euro is a threaded BB, the shell is 68mm wide and it uses 24mm (92mm total) of outboard bearings and a 24mm crank spindle. A BB30 is similar, 68mm shell but promotes a larger crank spindle (30mm) therefore a larger spindle to flex the same narrow bottom bracket junction. The M2 Alloy uses a BB86 which is a 86mm BB shell and press-fit bearings that equal 4mm added to the 86mm shell (92mm total) while using a 24mm spindle. The advantage to our BB is the wider down-tube and chain-stay described above. Rigidity is key for first straight pull and accelerating out of turns, while a flimsy frame will just get you cut off out of the gate.
Tapered Head tube
The standard for high-end race frames is a tapered head tube. A tapered head tube uses a 1-1/8” top bearing and a 1.5” bottom bearing and allows us to use a fork both lighter and stronger than ever before.
The M2 features a fully double-butted 7005-aluminum tube set. The massive down-tube tapers 52mm to 72mm top to bottom, which eliminates flex and allows your power to be efficiently converted to speed as you accelerate from the gate, and corners.
RACE BIKE AND RACE FRAME FITMENT GUIDE
|FRAME/BIKE SIZE||HEIGHT||TYPICAL AGE|
|FRAME/BIKE SIZE: MICRO||HEIGHT: 3' - 3'7"||TYPICAL AGE: 3 - 5|
|FRAME/BIKE SIZE: MINI||HEIGHT: 3'4" - 4'||TYPICAL AGE: 5 - 6|
|FRAME/BIKE SIZE: JUNIOR||HEIGHT: 3'10" - 4'5"||TYPICAL AGE: 7 - 8|
|FRAME/BIKE SIZE: EXPERT||HEIGHT: 4'2" - 4'9"||TYPICAL AGE: 9 - 10|
|FRAME/BIKE SIZE: EXPERT XL||HEIGHT: 4'6" - 5'2"||TYPICAL AGE: 11 - 12|
|FRAME/BIKE SIZE: PRO||HEIGHT: 4'9" - 5'7"||TYPICAL AGE: 13 - 14|
|FRAME/BIKE SIZE: PRO XL||HEIGHT: 5'6" - 6'1"||TYPICAL AGE: 15 - 18|
|FRAME/BIKE SIZE: PRO XXL||HEIGHT: 5'9" - 6'5"||TYPICAL AGE:|
|FRAME/BIKE SIZE: PRO XXXL||HEIGHT: 6'3" - 6'9"||TYPICAL AGE:|