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Geometry

  M (PRO 20") M (Junior 19.5")
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Reach 464 381
Stack 437 305
Top Tube (effective) 610 553
Top Tube (actual) 593 429
Seat Tube (effective) 256 211
Head Angle 75 67
Seat Angle 58 57
Head Tube 109 103
Chainstay 372 318
Wheelbase 839 777
Front Centre 544 617
Standover 497 626
BB Drop 55 71
BB Height 265 266
BB Type American BB to PF30 50mm / American BB
Fork Rake / Offset 39 28
Trail 41 53
Seatpost Diameter 24 26
Axle Spacing 146 134
Wheel Size 20/22 20
Tyre Max Width 50 58
Seatpost Length 518 359
Max Post Insertion 80 80
Seatpost Offset 0 0
Handlebar Width 723 642
Stem Length 47 56
Stem Angle 0 0
Crank Length 170/172.5 149
Headset 1/1.8 1/1.8
Frame Weight 2 2
Bike Weight 11 12
Data Source Manufacturer Site & Measured Own Bike Manufacturer Site & Measured Own Bike

Note: Frame with Unique Size "19.5' Junior" . but 2011 initial release BXR has Longer " PRO 20' " Size

Measurements are in millimeters and degrees.

Image showing geometry measurements

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