Mojo 4

2020–2023

Mojo 4: Dirty White Board
Mojo4 white
Mojo 4: Blue Dream
Mojo4 blue

The word Mojo refers to a magic spell or charm, and more broadly - a magical power. Since its introduction in 1994, the Mojo has delivered a wicked combination of fun and all-mountain prowess.

Years Manufactured 2020–2023
Version V4
Frame Material Carbon Fiber Monocoque
Frame Weight 5.9lbs w/ Fox DPS
Complete Build Weight Starting at 26.7 lbs
Wheel Size 27.5"
Front Travel 140mm (37mm rake recommended)
Rear Travel 130mm (dw-link)
Shock Specs 210 x 50mm
Boost Axles 148mm rear / 110mm front
Seatpost Diameter 31.6mm
Rear Brake 160mm post mount (203mm max rotor)
Chainstay Length 425mm
Bottom Bracket Threaded BB (73mm BSA)
ISCG 05 Compatible ISCG 05 Tab Mount available separately
Headset ZS44 upper / ZS56 lower
Cable Routing In-frame molded cable tunnels
Bottle Compatible 22oz bottles fit inside front triangle
Colors Dirty White Board or Blue Dream
Sizes S / M / L / XL
Frame Warranty Lifetime

Mojo 4 Specific FAQs

All our manuals are available here.

The Mojo can accommodate up to a 27.5” x 2.6” tire.

The max chainring for a Mojo is a 34t.

Yes, the max size oval chainring we recommend is a 32T. Not all oval chainrings are the same, so we recommend double checking clearance before installation.

You can find torque specs for the Mojo in the tab on the right.

For now, no. The Ripmo AF was our first aluminum bike in 18 years. Depending on the market reaction to that model, we’ll decide whether or not to pursue more “AF” models.

No, the Fox 36 has a larger axle to crown height and stiffer chassis than the Fox 34. A 140mm Fox 36 will put too much stress on the frame's headtube. A 140mm-150mm travel RockShox Pike is compatible with the Mojo 4.

The Mojo uses 160mm post mount rear brake mounts.

To run a 180mm rotor, you'll use the following Shimano part number: SM-MA-F180P / P2
To run a 203mm rotor, you'll use the following Shimano part number: SM-MA-F203P / P

For more information, the following is a link to the adaptor chart:

https://productinfo.shimano.com/#/com?cid=C-460&acid=C-193

No. The leverage ratio on the Mojo is not coil-compatible.

Yes, but the bike is optimized around a 37mm offset. The 44mm offset fork shortens the trail (the distance between the contact patch and the steering axis), which can cause the front end to feel less stable.

Many of our paints are available online via My Perfect Color. Some automotive retailers have the ability to custom match paint.

The PMS color codes for our frames are:

  • Dirty Whiteboard:
    • Primary Color: PMS 428 (G)
    • Accent Color: PMS 418 (G)
    • Decal Color: PMS 021
  • Blue Dream:
    • Primary Color: PMS 7477 (G)
    • Accent Color: PMS 2211 (G)
    • Decal Color: PMS 021

General FAQs

To see our general FAQs click here.

Mojo 4 Geo F

With 140mm fork (529mm axle to crown)

Nominal Size   SM MD LG XL
Seat Tube Length A 360 14.2 368 14.5 419 16.5 470 18.5
Top Tube Length B 580 22.8 603 23.7 632 24.9 666 26.2
Head Tube Length (4mm stack of lower cup not included) C 109 4.3 126 5 142 5.6 158 6.2
Chainstay Length D 425 16.7 425 16.7 425 16.7 425 16.7
Seat Tube Angle E 76.6° 76.6° 76.6° 76.6° 76.6° 76.6° 76.6° 76.6°
Head Tube Angle F 65.4° 65.4° 65.4° 65.4° 65.4° 65.4° 65.4° 65.4°
Wheelbase G 1166 45.9 1193 47 1225 48.2 1262 49.7
BB Height (with Maxxis Minion DHF 2.6" tires) 340 13.4 340 13.4 340 13.4 340 13.4
Stack 586 23.1 601 23.7 616 24.3 630 24.8
Reach 440 17.3 460 18.1 485 19.1 515 20.3
Trail 123 4.8 123 4.8 123 4.8 123 4.8
Standover 680 26.8 690 27.2 720 28.3 742 29.2
Saddle height for seat tube angle 640 25.2 690 27.2 760 29.9 810 31.9

Sizing Guide (Rider Height)

s
152–163CM5'0"–5' 4"
m
160–173CM5'3"–5' 8"
l
170–185CM5'7"-6'1"
xl
183–196CM6'–6'5"

Dropper Post Saddle Height Calculations

Do not try to insert your post deeper than these measurements. Forcing the post can result in a seat tube failure.

Frame measurement SM MD LG XL
Center-to-Top 363 371 423 486
Max Insertion 200 225 275 275

Bike Yoke Revive

Measurement from center BB to center of saddle rail (mm)

Drop Min/Max SM MD LG XL
185 Min 648 631 650 713
  Max 718 726 778 841
160 Min 598 581 625 688
  Max 698 706 758 821
125 Min 530 538 590 653
  Max 648 656 708 771

Fox Transfer

Measurement from center BB to center of saddle rail (mm)

Drop Min/Max SM MD LG XL
150 Min 618 601 633 696
  Max 718 726 778 841
125 Min 569 557 609 672
  Max 668 676 728 791
100 Min 524 532 584 647
  Max 618 626 678 741

KS Lev

Measurement from center BB to center of saddle rail (mm)

Drop Min/Max SM MD LG XL
175 Min 626 609 649 712
  Max 714 722 774 837
150 Min 576 572 624 687
  Max 674 682 734 797
125 Min 538 546 598 661
  Max 624 632 684 747
100 Min 513 521 573 636
  Max 584 592 644 707

Reverb

Measurement from center BB to center of saddle rail (mm)

Drop Min/Max SM MD LG XL
170 Min 643 626 658 721
  Max 763 771 823 886
150 Min 603 586 638 701
  Max 723 731 783 846
125 Min 553 561 613 676
  Max 673 681 733 796
100 Min 528 536 588 651
  Max 623 631 683 746
Hardware Torque Spec (Nm) Thread Treatment / Notes
Clevis to Swingarm Bolts 15 Titanium Bolts: Loctite 243 on threads, Ti anti-seize under head of bolt
Derailleur Hanger Bolt 5 Grease
Downtube Rock Guard 2 Loctite 243
Forward Shock Mount Bolt 10 Loctite 243 on threads, grease on the shaft
Lower Link 6mm Preload Bolts 2 Loctite 243 on threads, grease on flange
Lower Link 5mm Pinch Bolts 10 Loctite 243
Lower Shock to Clevis Bolt 20 Ti anti-seize
Rear Brake Caliper 6 Loctite 243
Seat Binder 5 Ti anti-seize
Upper Link Bolts 10 Loctite 243
Bushings - Apply Slick Honey (grease) to all bushings during reassembly
Hexle - There is not a numerical torque figure for the Hexle. We recommend tightening the 5mm with your multi tool that you carry with you. This way you’ll be able to remove it in case of a flat out on a ride.