The Mojo HDR 650b is the fraternal twin brother of the Mojo HDR and the younger brother of the Mojo HD, taking the HDs technology and versatility a few steps further. As you can tell by the name, the HDR 650b features that third wheel size that all the kids are talking about these days: 650b / 27.5".
Highlights are below. If you want to hear the story of how this bike came about, head over to the story tab. The details tab will give you a lot of technical info about the bike.
Maybe the best place to start would be the galleries tab, where we've got a few videos showing the bike in action along with some lovely big studio shots.
| Years Manufactured | 2013–2014 |
| Version | HDR 650b |
| Frame Material | Carbon front and rear triangle |
| Wheel Size | 27.5” |
| Front Travel | Designed to work with 160mm or 180mm front forks |
| Rear Shock Spec | 7.875" x 2" |
| Rear Axle | 142mm Maxle |
| Seatpost Diameter | 31.6mm |
| Rear Brake | 160mm post mount / 180mm max rotor |
| Bottom Bracket | 68mm (BSA) English Thread |
| Headset | Mixed Tapered (1.5" lower, 1.125" upper) |
| Front Derailleur | High Direct Mount |
| Colors | Reverse Vitamin P or Cobra Blue |
| Sizes | S / M / L / XL |
Archived Build Kits for the Mojo HDR 650b
Build kits show components included when the Mojo HDR 650b was last available.
Frame Only
| Component | Standard Component |
|---|---|
| Shock | 2014 Fox Float CTD Adjust Factory Series with Kashima Coat, 7.875 x 2.0 |
XT
| Component | Standard Component |
|---|---|
| Fork | 2014 Fox Float 34 CTD 27.5 140mm travel, Kashima Coat, 15QR thru-axle, tapered steerer, black |
| Shock | 2014 Fox Float CTD Adjust Factory Series with Kashima Coat, 7.875 x 2.0 |
| Wheels | Stan's ZTR Flow EX 650b Rim 32H Black, w/Speed Tuned XM hubs |
| Tire/s | Maxxis 27.5x 2.30 Minion DHF F60 3C/EXO TR |
| Brakes | Shimano Deore XT BR-M785 180mm Front Rotor, 160mm Rear Rotor |
| Crankset | RaceFace Turbine Cinch 36/24 175mm |
| Rear Derailleur | Shimano Deore XT Shadow + SGS M786 |
| Front Derailleur | Shimano FD-M781D, XT DOWN-SWING, DUAL-PULL, DIRECT MOUNT |
| Shift Levers | Shimano SL-M780 DEORE XT |
| Cassette | Shimano CS-M771-10 DEORE XT 11-13-15-17-19-21-24-28-32-36T |
| Headset | Cane Creek 40: ZS44 1 1/8" top/EC49/40 Traditional 1.5" bottom |
| Handlebars | Ibis Hi-Fi Carbon Bar - 740mm, 20mm rise, 9º x 5º bend |
| Stem | Ibis 3D forged 31.8 clamp/28.6 Steerer 50~120 in 10mm increments |
| Seatpost | Ibis 7075 3D forged, 31.6 x 350 |
| Saddle | Ibis custom saddle, CrMo rails |
X01
| Component | Standard Component |
|---|---|
| Fork | 2014 Fox Float 34 CTD 27.5 140mm travel, Kashima Coat, 15QR thru-axle, tapered steerer, black |
| Shock | 2014 Fox Float CTD Adjust Factory Series with Kashima Coat, 7.875 x 2.0 |
| Wheels | Stan's ZTR Flow EX 650b Rim 32H Black, w/Speed Tuned XM hubs |
| Tire/s | Maxxis 27.5x 2.30 Minion DHF F60 3C/EXO TR |
| Brakes | Shimano Deore XT BR-M785 180mm Front Rotor, 160mm Rear Rotor |
| Crankset | RaceFace Turbine Cinch 30T |
| Rear Derailleur | SRAM RD X01 11SPD |
| Front Derailleur | Nope. |
| Shift Levers | SRAM TRIGGER X1 11SPD |
| Cassette | SRAM X1 |
| Headset | Cane Creek 40: ZS44 1 1/8" top/EC49/40 Traditional 1.5" bottom |
| Handlebars | Ibis Hi-Fi Carbon Bar - 740mm, 20mm rise, 9º x 5º bend |
| Stem | Ibis 3D forged 31.8 clamp/28.6 Steerer 50~120 in 10mm increments |
| Seatpost | Ibis 7075 3D forged, 31.6 x 350 |
| Saddle | Ibis custom saddle, CrMo rails |
XX1
| Component | Standard Component |
|---|---|
| Fork | 2014 Fox Float 34 CTD 27.5 140mm travel, Kashima Coat, 15QR thru-axle, tapered steerer, black |
| Shock | 2014 Fox Float CTD Adjust Factory Series with Kashima Coat, 7.875 x 2.0 |
| Wheels | Stan's ZTR Flow EX 650b Rim 32H Black, w/Speed Tuned XM hubs |
| Tire/s | Maxxis 27.5x 2.30 Minion DHF F60 3C/EXO TR |
| Brakes | Shimano XTR Trail BL-M988/BR-M985 180/160mm |
| Crankset | Race Face Next SL 32t |
| Rear Derailleur | SRAM RD XX1 TYPE 2 LONG CAGE 11SPD RED |
| Front Derailleur | Nope. |
| Shift Levers | SRAM SL TRIGGER XX1 11SPD |
| Cassette | SRAM X01 CASSETTE 11SP 10-42 |
| Headset | Cane Creek 40: ZS44 1 1/8" top/EC49/40 Traditional 1.5" bottom |
| Handlebars | Ibis Hi-Fi Carbon Bar - 740mm, 20mm rise, 9º x 5º bend |
| Stem | Ibis 3D forged 31.8 clamp/28.6 Steerer 50~120 in 10mm increments |
| Seatpost | Easton EC90 SP ZERO 400 31.6 |
| Saddle | Ibis custom saddle, CrMo rails |
Possible Upgrades
These upgrades were available when not already included as standard in a build kit for the Mojo HDR 650b.
| Component | Upgrade/s available |
|---|---|
| Shock | Cane Creek DBair CS 7.87x2 |
| Fork | RockShox Pike RCT3 140mm |
| Wheels | Ibis Carbon 741 |
With 140mm Fork
| Nominal Size | Small | Medium | Large | X-Large | |
|---|---|---|---|---|---|
| Seat Tube Length | A | 381 15 | 432 17 | 483 19 | 533 21 |
| Top Tube Length | B | 564 22.2 | 587 23.1 | 605 23.8 | 625 24.6 |
| Head Tube Length | C | 94 3.7 | 103 4.1 | 118 4.6 | 134 5.3 |
| Chainstay Length | D | 435 17.1 | 435 17.1 | 435 17.1 | 435 17.1 |
| Seat Tube Angle | E | 71.1° 71.1° | 71.1° 71.1° | 71.1° 71.1° | 71.1° 71.1° |
| Head Tube Angle | F | 67.1° 67.1° | 67.1° 67.1° | 67.1° 67.1° | 67.1° 67.1° |
| Wheelbase | G | 1098 43.2 | 1119 44.1 | 1140 44.9 | 1161 45.7 |
| Stack | 571 22.5 | 580 22.8 | 595 23.4 | 610 24 | |
| Reach | 371 14.6 | 388 15.3 | 409 16.1 | 418 16.5 | |
| Standover (mid toptube) | 715 28.1 | 758 29.8 | 760 29.9 | 770 30.3 | |
| Trail | 100 3.9 | 100 3.9 | 100 3.9 | 100 3.9 |
Sizing Guide (Rider Height)
s
152–165CM5'0"–5' 5"
m
163–175CM5'4"–5' 9"
l
175–188CM5'9"-6'2"
xl
183–198CM6'–6'6"