Transition Sentinel GX Complete Mountain Bike 2018

(1 Review) sku# 130952
Transition - Sentinel GX Complete Mountain Bike 2018Transition - Sentinel GX Complete Mountain Bike 2018Transition - Sentinel GX Complete Mountain Bike 2018Transition - Sentinel GX Complete Mountain Bike 2018Transition - Sentinel GX Complete Mountain Bike 2018Transition - Sentinel GX Complete Mountain Bike 2018Transition - Sentinel GX Complete Mountain Bike 2018
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Product Info

Gone are the days of 29 "dad" whips that handle like Grand Pappy's Studebaker. The Transition Sentinel GX Complete Mountain Bike is more like the red Firebird that's here to steal your girlfriend - ready to dispel any lingering notion you've had of the traditional 29er. Slangin' Transition s all-new Speed Balanced Geometry and burly front and rear bump eaters, the Sentinel provides that playful and snappy ride you've been looking for, but with all the 29er benefits like better rolling resistance and straight line speed. Transition also equips the Sentinel with their GiddyUp 2.0 suspension design and SRAM Eagle™ group set for maximum pedaling efficiency without sacrificing gnar-shred support on descents. Serious performance meets over-the-top fun when you hop on the extremely progressive and powerful Transition Sentinel GX Complete Mountain Bike.

Product Details

Frame/Shock

Speed Balanced GeometrySBG 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 an 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.

GiddyUp 2.0HH SuspensionBuilding upon the success of Transition's original GiddyUp suspension design, the new GiddyUp 2.0HH system has been refined for the modern two-wheel cowboy delivering a slightly firmer feel for more efficient pedaling, as well as more progressive travel that provides that extra little bit of bottom-out support when needed.

Fox DPX2 Performance Elite ShockCombining DPS XC efficiency and X2 DH performance, the DPX2 is the ultimate trail shock. The Dual Piston Base Valve has dedicated compression and lockout circuits for each of the three modes -- Open, Medium, and Firm. It also features a recirculating damper design found in X2 shocks, creating excellent small bump sensitivity, great mid-stroke damping support, and better control in transitions.

Shock Adjustments3 Lever Actuated Modes (Open, Medium, Firm) | Open Mode Adjust | External Rebound | Air Spring Pressure

4130 Chromoly Tubing

Ultra Stable & Longer Geometry

12x148 Boost Rear End

Enduro Max Sealed Bearings

44mm Headtube / Tapered Steer Tube Compatible

73mm Threaded Bottom Bracket

External Rear Brake Cable Routing

Extra Long Seatpost Insertion

Full Water Bottle Storage

Rattle-Free Cable Routing

Molded Rubber Frame Protection

Trunion Shock Mount

Up to 2.5" Tire Clearance

Fork

RockShox Lyrik RC Solo AirWith a completely new chassis, featuring tapered legs and a taller brace for stiffness and light weight, and a collection of new technologies such as a re-tuned Solo Air spring with additional negative volume for a plusher initial stroke, Bottomless Token tunability in both Solo Air and Dual Position Air configurations, SKF wiper seals for lower friction and better sealing, and user-tunable rebound damping via internal shims (same as BoXXer), Lyrik is built to inspire confidence and blur the lines of capability that limit all other forks in its class. Proven features include 35mm Fast Black upper tubes and an RC Charger Damper with a new SKF cartridge seal to reduce friction and extended service intervals.

Fork AdjustmentsLow Speed Compression from Open to Firm | Charger 2 Damper (RC) | External Rebound | Air Spring Pressure

Drive Train

SRAM Descendant 6K CranksetThe Descendant 6K crankset delivers consistent performance every time out. Featuring SRAM's X-SYNC™2 tooth profile chainring, the Descendant crankset is engineered for complete chain control. Each tooth's thickness is precisely toleranced and controlled to work seamlessly with the SRAM chain's inner and outer links.

SRAM GX Eagle™ 12-Speed DerailleurThis new GX derailleur not only answers the Eagle™ drivetrain's need for greater capacity, but it's also the next evolution of SRAM's proven, 1x-specific X-HORIZON™ design. The larger, 14-tooth X-SYNC™ lower pulley allows for a 10- to 50-tooth cassette, and also adds to Eagle's overall smooth-pedaling feel. SRAM's new Type-3 ROLLER BEARING CLUTCH™ features a smoother operation and feel. CAGE LOCK™ has been moved back and out of the way, protecting it from trail debris. And a redesigned, robust mounting system further improves the Eagle™ derailleur's performance and overall durability.

SRAM GX Eagle™ 12-Speed ShifterThe challenges of riding a mountain bike should be kept to roots, rocks, mud, trees, jumps, drops and breathing. Putting total control of your gear selection into the thumb of one hand, it's simple to find the right gear, right now. The GX Eagle™ trigger shifter is the control center of the Eagle™ drivetrain. Its internal works have been updated to include a 12th gear, and improved to enhance trigger feel, precision and durability.

SRAM XG 1275 Eagle™ CassetteRide anywhere with this wide range XG-1275, 10- to 50-tooth Eagle cassette that provides the right gear. Fast on the flats. Control on the climbs. Dictate your own pace, anywhere. Only Eagle™ technology is the 1x drivetrain engineered for infinite freedom. FULL PIN technology uses lightweight, stamped steel cogs held together with high-strength stainless steel pins. The result: a cassette that's light and strong. The open design similar to SRAM's X-DOME™ cassette aids in mud clearance, giving you cleaner shifting performance and longer component life. New X-GLIDE™2 improves both inboard and outboard shifting, as well as chain retention.

SRAM GX Eagle™ 12-Speed ChainIt might look normal from the outside, but the engineering inside this incredible new chain design that makes possible a gear range previously found only in 2-chainring drivetrains. And it’s also the biggest contributor to the Eagle™ drivetrain’s ultra-smooth, precise, durable and quiet performance. The Eagle™ chain’s links have a smooth radius, with no sharp edges or chamfers, which yield a significant reduction in noise, friction and wear on chainrings and cassette cogs. This design also allows for a flatter plate, which means more consistent chain riveting and greater overall strength. HARD CHROME™ technology extends the chain’s optimal performance life.

Brakes

SRAM Code R Hydraulic Disc BrakesetSleek, easy to use, yet immensely powerful. Code R packs a winning punch with a reliable DirectLink™ lever mated to Code's new oversized four-piston caliper. SRAM's signature ergonomics are supplemented by the tool-free reach adjust for a fit to each riders' needs, to unleash Code's superior braking, power, consistency and modulation.

SRAM Centerline RotorsThe new Centerline rotor was designed to keep the center of friction consistent throughout rotation, thereby minimizing vibration offering consistent performance and a quiet ride.

Wheel Set

Maxxis Minion DHF EXO Dual | Front TireThe Minion DHF was designed for the often loose and muddy conditions of aggressive all-mountain terrain. The DHF incorporates ramped knobs for low rolling resistance and channel-cut knobs to increase gripping edges, giving straight-line control and precise cornering.

Maxxis Minion DHR II EXO Dual | Rear TireThe trail version of the Maxxis Minion DHR II features the same tread pattern as its downhill counterpart, but uses a single-ply casing to reduce weight. With side knobs borrowed from the legendary Minion DHF, but widened to provide more support, the DHR II corners like no other. The center tread features ramped knobs to improve acceleration and sipes to create a smooth transition when leaning the bike. Paddle-like knobs on the center tread dig in under hard braking and help keep the bike under control. Pair it with a Minion DHF up front for the ultimate aggressive trail riding tire combo!

Additional Features

RockShox Reverb Stealth Dropper SeatpostDon’t let its familiar good looks fool you—Reverb is a whole new weapon. Its internals have been completely re-engineered to improve on its already legendary performance and to offer enhanced reliability: all the smallest details, down to the single seal, have been re-evaluated and updated to pass the hardest and longest durability tests. Additional bushing overlap also improves performance over time. This is the brand-new Reverb, engineered for the next-generation mountain biker.

Shipping Information

Oversize Itemcan only be shipped via UPS Ground within the continental U.S.

Specs

  • Used For: All-Mountain
  • Wheel Size: 29"
  • Weight (lbs): 32.6
  • Weight (kg): 14.79
  • Gearing: 1 x 12
  • Handlebar Shape: Riser
  • Frame Material: Aluminum Alloy
  • Brake Type: Hydraulic Disc
  • Fork: RockShox Lyrik RC Solo Air
  • Stanchion Diameter (mm): 35
  • Front Travel (mm): 160
  • Front Travel (in): 6.29
  • Rear Shock: Fox DPX2 Performance Elite
  • Rear Travel (mm): 140
  • Rear Travel (in): 5.51
  • Shifters: SRAM GX Eagle
  • Rear Derailleur: SRAM GX Eagle
  • Crankset: SRAM Descendent 6K
  • Cassette: SRAM XG-1275 Eagle
  • Chain: SRAM GX Eagle
  • Bottom Bracket: 73mm BSA Threaded
  • Pedals: Not Included
  • ISCG Tabs: ISCG 05
  • Brake Levers: SRAM Code R
  • Brake Calipers: SRAM Code R
  • Rotors: SRAM Centerline 180mm
  • Headset: FAS No.57E
  • Handlebar: RaceFace Chester 35 780mm x 35mm
  • Bar Tape/Grips: Velo Single Clamp
  • Stem: RaceFace Æffect R 40mm
  • Saddle: ANVL Forge Stealth CroMo
  • Seatpost: Rockshox Reverb Stealth
  • Hubs: Novatec D711SB & D462SB XD
  • Rims: E*Thirteen TRS 30mm
  • Front Tire: Maxxis Minion DHF EXO TR | 27.5 x 2.3
  • Rear Tire: Maxxis Minion DHR II EXO TR | 27.5 x 2.3
  • Warranty: 3 Years More 
Size S M L XL
Top Tube (mm) 568 593 622 650
Seat Tube (mm) 360 400 440 490
Stack (mm) 617 617 626 635
Reach (mm) 425 450 475 500
Standover Height (mm) 685 695 700 715
Head Tube Angle (°) 64 64 64 64
Seat Tube Angle (°) 77.5 76.8 76.3 75.8
Chainstay Length (mm) 435 435 435 435
Bottom Bracket Height (mm) 345 345 345 345
Bottom Bracket Drop (mm) 30 30 30 30
Head Tube Length (mm) 100 100 110 120
Wheelbase (mm) 1193 1218 1247 1277

Other Notes

Transition products can only be shipped within the United States

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