The Sentinel Carbon GX Sits Right In The Middle Of Our Product Line As A Workhorse Spec That Gives You All The Important Parts You Need On A Carbon Frameset ..


2020 Transition Sentinel Carbon GX Full Sus Mountain Bike in Grey

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2020 Transition Sentinel Carbon GX Full Sus Mountain Bike in Grey

Season : 2020

Brand : Transition


Weight : 15KG

The Sentinel Carbon GX sits right in the middle of our product line as a workhorse spec that gives you all the important parts you need on a carbon frameset at a great price. For suspension, you get a similar Fox dpx2 performance rear shock found on our xo1 build kit as well as the always impressive Fox 36 with the new grip damper. For the drivetrain, 12spd GX eagle has a massive range (50-10 tooth) for getting you up super steep climbs. The build continues to punch above its weight class by offering 4 piston code r brakes for superior stopping power and fade resistance, stans flow s1 comp complete wheelset, and our favorite 3c maxxis minion tires. We purposely built this spec so you didn't need to upgrade a single part on this bike, just set and forget.

Available colours: gunmetal grey, pinot noir red

Speed Balanced Geometry

SBG ensures the bike maintains low speed agility, front wheel traction, and proper rider weight balance while actually increasing confidence in steep terrain and at high speeds. With sbg, a slacker head tube angle is combined with a all new reduced offset fork standard, preventing the front wheel from being too far in front of the rider. This improves front to rear weight distribution on the bike, which is often out of balance on long and slack bikes. One of sbg's greatest benefits is that it creates a confident steering feel that adapts to wheel speed. More stability when going fast, more agility on technical slow speed maneuvering as well as improved traction, control and confidence for any skill level of rider.

Sentinel Geometry

  S M L XL
reach 425mm 450mm 475mm 500mm
stack 617mm 617mm 626mm 635mm
effective tt length 568mm 593mm 622mm 650mm
seat tube length 360mm 400mm 440mm 490mm
effective st angle 77.5 76.8 76.3 75.8
head tube length 100mm 100mm 110mm 120mm
head tube angle 64 64 64 64
chainstay length 435mm 435mm 435mm 435mm
wheelbase 1193mm 1218mm 1247mm 1277mm
bottom bracket drop 30mm 30mm 30mm 30mm
estimated bb height 345mm 345mm 345mm 345mm
stand over height 685mm 695mm 700mm 715mm
fork offset 43mm 43mm 43mm 43mm
ineffective toptube* 1.442pc 1.523pc 1.604pc 1.685pc
downtube angle 60 60 60 60
stance** 680mm 680mm 680mm 680mm
rocker eye to eye 185mm 185mm 185mm 185mm

*measured in parsecs
**size 9 foot (measured in flip-flops)

Giddyup 2.0hh Suspension

take our successful giddyup suspension system, add one part increased pedaling efficiency, two parts wider sag range, and three parts increased small bump sensitivity, and you get giddyup 2.0hh. Incredible pedaling performance balanced with a superb neutral, comfortable and fun feel that we're known for.

We specifically tuned the suspension with a moderate amount of chain growth which is highest at the sag point and decreasing deeper into the travel. Because of this finely tuned wheel path, there is a notable increase in traction when climbing, without the rider noticing the chain growth fighting the suspension movement.

Giddyup 2.0hh is extremely easy to setup and it provides excellent support throughout the entire stroke of the shock so you can use all your travel without worrying about bottom out. Designed to be active while climbing, rear shock climbing platforms are not necessary. The suspension remains free to smooth out the trail, improve traction and control without sacrificing efficiency. With giddyup 2.0hh you can focus on the trail, no remotes, levers or knobs. Just grab your bike and giddyup.

Frame Features  
fork axle to crown 571mm
fork offset 42mm (rockshox) / 44mm (fox)
rear shock size 205mm x 57.5mm
rear shock hardware trunion bearing mount top / 25mm x 8mm bottom
bearings full enduromax sealed cartridge bearings
headset 44mm zero stack (top) / 56mm zero stack (bottom)
bottom bracket 73mm bsa threaded
rear brake 180mm post mount
rear axle syntace x12 148
front derailleur no support
iscg tabs iscg05
seatpost diameter 31.6mm
max seatpost insertion alloy small 140mm, medium 185mm, large 225mm, xl 270mm, xxl 290mm
max seatpost insertion carbon small 190mm, medium 225mm, large 245mm, xl 245mm
seat clamp alloy 34.9mm/carbon 37mm
maximum chainring 34t
maximum tire 29 x 2.5
sag setup 18-20mm (32-35%)
frame weight
(medium with shock)
carbon 7.05 lbs. - 3.2 kg alloy 9.61 lbs. - 4.36 kg
warranty 3 year we got your back warranty


  • €5,676.79
  • $5,212.39
  • $7,715.33
  • kr60,178.57
  • kr47,600.86
  • kr42,421.13
  • $7,973.54
  • ¥568,569.94
Special Offer

£10 Voucher When You Click & Collect

When you collect your new bike from your nearest Hargroves store you will receive £10 to spend at Hargroves Cycles on anything in-store absolutely FREE! You'll receive your £10 voucher when you come to pick up your bike.
Special Offer

50% Off Selected Pedals With All Bikes

Get 50% off a select range of pedals when you purchase a bike from Hargroves Cycles. Once you add the bike to cart you will be taken the pedal selection page to add your half-price pedals, discount will be applied at the checkout.
Technical Information
Technical Information

Frame - Sentinel Carbon 140mm Rear/160mm Front

Fork - Fox 36 Grip Performance 160mm

Rear Shock - Fox DPX2 Performance

Headset - FSA No.57E

Derailleur - SRAM GX Eagle

Shifters - SRAM GX Eagle

Brakes - SRAM Code R

Rotors - SRAM Centerline (180mm)

Crank - SRAM Descendent 6K DUB (170mm x 30t)

Handlebar - RaceFace Chester 35 - SM/MD (780 x 20mm) - LG/XL (780 x 35mm)

Stem - RaceFace Aeffect R (40mm)

Grips - ODI Elite Flow

Pedals - Not Supplied

Seat Post - RockShox Reverb Stealth - SM (125mm) - MD (150mm) - LG/XL (170mm)

Saddle - ANVL Forge Cromo

Chain - SRAM GX Eagle

Cassette - SRAM XG 1275 (10-50t)

Wheelset - Stans Flow S1 Comp

Front Tyre - Maxxis Minion DHF 3C WT (29x2.5)

Rear Tyre - Maxxis Minion DHRII 3C WT (29x2.4)

Weight - 31.58 lbs / 14.33 kg

Sizing Information
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