Mason Definition 2015

Please login now to see the numbers

We ask that you login after viewing so many bikes, to protect our data from thieving robots.

It's totally free - no password - no catch.

Geometry

Select two bikes to compare.
Any bike, any page.

  50CM 52CM 54CM 56CM 58CM 60CM
Compare
Reach 325 385 399 389 333 414
Stack 630 570 603 645 644 511
Top Tube (effective) 451 487 453 499 600 569
Top Tube (actual) 551 498 432 624 482 683
Seat Tube C-T 406 588 570 575 511 663
Seat Tube C-C 496 514 518 570 558 562
Head Angle 63 81 74 71 81 71
Seat Angle 61 65 71 66 72 73
Head Tube 143 120 151 146 184 210
Chainstay 419 464 443 448 392 391
Wheelbase 1187 866 873 1200 1058 911
Front Centre 507 483 666 497 679 508
Standover 816 630 802 660 753 929
BB Drop 82 82 83 62 64 64
Fork Rake / Offset 50 37 43 37 52 40
Trail 65 68 68 57 64 63
Fork Length (A2C) 438 450 305 376 444 354
Axle Spacing 135 142 153 156 135 160
Handlebar Width 34 37 35 50 43 39
Stem Length 75 97 97 89 121 141
Crank Length 138 197 205 153 186 196
Data Source Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer

Measurements are in millimeters and degrees.

If you like the site, can we ask a favor?

Click now, buy soon, and we'll get a few cents.

Jenson USA - Competitive Cyclist

Thank you! Bob & Dave

New Search by Stack and Reach

You can now search the database by numbers.

Find bikes that match your geometry criteria.

Like this project? Subscribe for occasional emails about new things. No Spam. Promise.