JAM C Pro 27

Geometry Specification
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JAM C Pro 27 Features

Lightweight carbon frame with aluminium rear swing arm, 148 mm Boost standard

Fox Float 34 fork and Fox Float Performance shock

DT Swiss M1900 wheels and Maxxis Minion tyres

Conquers all mountains

  • Optimum suspension performance for every situation

    The F.O.L.D. chassis, specially tailored to All-Mountain requirements, ensures a perfectly balanced combination: F.O.L.D. is extremely sensitive while being progressive enough to prevent a harsh bottom out.

  • Light, robust & low-maintenance

    High-quality bearing, closed rear triangle and a shock that is protected against mud – we leave nothing to chance. It goes without saying that we also thought to add a bottle cage.

  • It's the ride characteristics that count

    We want mountain biking to be a truly joyful experience, which is why we created the JAM with a modern, agile and aggressive geometry.


Frame size cm 41 44 47 50
A Size (MM) 410 440 470 500
B Effective Top Tube (MM) 574 598 623 648
C Head Tube Angle (°) 66.3 66.3 66.3 66.3
D Effective Seat Tube Angle (°) 74 74 74 74
E Chainstay (MM) 425 425 425 425
F BB Drop (MM) 12 12 12 12
G Head Tube Length (MM) 110 110 135 155
H Fork Length (MM) 552 552 552 552
I Fork Offset (MM) 42 42 42 42
J Wheelbase (MM) 1131 1156 1186 1214
K Stack (MM) 586 595 620 637
L Reach (MM) 410 430 450 470


Carbon front triangle, 6066 aluminium rear triangle, PF30 BB, 148x12 through axle, internal cable routing, Post Mount 180 mm
Fox 34 Float Performance, 110x15 mm QR, 150 mm travel
Rear shock
Fox Float Performance, 200/57, hardware: shaft22,2x8 mm/body22,2x8 mm, custom tune
Shimano Deore XT
Front derailleur
Shimano Deore XT 8000, direct mount
Rear derailleur
Shimano Deore XT 8000, 11-speed
Sprocket description
Shimano Deore XT, 11-42T
Crankset description
Shiamno XT, 36/26T
BBB, aluminium, riserbar, 760mm, rise: 20mm, backsweep: 9degree
BBB, aluminium, 31.8mm
Saddle description
Focus Trail Saddle
KindShock E30i, 31,6mm, internal
Shimano Deore XT M8000, 180 mm / 180 mm
DT Swiss M1900 TLC, 584-30, 148x12 mm / 110x15 mm
Tire Description
Minion DHF 2.5 3C/TR/ EXO, foldable
Brake type
Chain ring
Seatpost type
Dropper seatpost
Shifting type
Mechanical shifting
150 mm