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Jamis Portal C1

Jamis Portal C1
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Portal - noun: DOOR, ENTRANCE; especially a grand or imposing one.

Pass boldly through to the other side and impose on the most fun you've had on two wheels with the Jamis Portal C1. Its high-modulus carbon fiber frame swings your rear wheel through 130mm of micro-tracking 3VO suspension, renowned for its trail-contouring ability that goes hand-in-hand with big-hit burliness. A 140mm Fox 36 Float fork easily handles the rough stuff up front, ensuring your trail-spec'd Stan's NoTubes Arch carbon wheels track right where you want them, ready and willing to dig deep, wrapped in Vittoria's Martello tubeless tires.

The entire trail opens to you when you've got the proven combo of a huge-range SRAM XX1 Eagle 12-speed drivetrain and TRP G-Spec Trail SL brakes to ensure you have the leverage when you need it, the speed when you want it, and the power to reign it all in when the speed gets critical. And, the Portal will feel as familiar as walking out your front door thanks to a rider-tuned Race Face cockpit, and an instantly dialable stance, courtesy of your Fox Transfer dropper.

Dropper posts

A dropper seatpost allows you to quickly lower and raise your seat to give you an ideal riding position. Dropping your seat creates a lower center of gravity for better control and maneuverability on steep descents, while raising it puts you at normal riding height for efficient pedaling.

Construction can include either hydraulic- or cable-actuated systems and the post’s travel can either be infinitely adjustable or stopped at set intervals, depending on the model.

Dropper seatposts come in standard lengths and diameters and vary by the amount of travel.


Frame Dyad Pro High Modulus Carbon Fiber, 130mm travel 3VO suspension, Enduro Max sealed bearing pivots, 1.5 - 1 1/8" tapered head tube, 12x148mm thru-axle, Internal dropper post routing, Custom Jamis upper chainguide, MRP SXg lower chainguide, SLS 450lb Spring, high/low speed compression, high/low speed rebound, 10mm hardware, replaceable derailleur hanger
Fork Fox Factory 36 Float 29" w/ 3-position adjust compression & lock-out,15x110mm axle, air spring compression, rebound adjust, tapered alloy steerer, 140mm travel
Headset FSA Orbit IS Integrated, 8mm cone spacer
Rear Shock Fox DHX2 Factory Series coil shock w/2-position compression switch
Axles Front: 110 x 15mm
Rear: 148 x 12mm
Rims/Wheels Stans Arch CB7 Carbon 29" tubeless
Hubs Stan's NEO
Spokes Sapim Race
Tires Vittoria Martello 29 x 2.35", TNT tubeless
Crankset Truvativ Descendant Carbon
Chainrings 32T
Bottom Bracket SRAM DUB
Chain SRAM XX1 Eagle, 12-speed
Rear Derailleur SRAM XX1 Eagle, 12-speed
Cassette/Rear Cogs SRAM XG1299, 12-speed, 10-50T
Shifters SRAM XX1 Eagle, 1x12-speed
Handlebars Race Face Turbine R, 780mm x 20mm rise, 35mm diameter
Tape/Grips Jamis Lock-On
Stem Race Face Turbine R, 50mm extension, 35mm clamp diameter
Brakes TRP G-Spec Trail SL 4-piston hydraulic disc, TR-33 180mm 6-bolt rotors
Saddle WTB Volt
Seat Post Fox Transfer Dropper, 1x remote

* Subject to change without notice.