Trek Rail 9.9 CX Race Gen 4

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Geometric Data Components

Sumarize

Highlights

Top Carbon Frame
Premium Groupset components
Best brakes in class
Best suspension components
Modern bike geometry
Powerful downhill capabilities

Show Bike on trekbikes.com

CategoryE-Mountain

Travel Front160 mm

Travel Rear150 mm

Weight23.1 kg

Wheels29

Frame MaterialCarbon

GroupsetShimano XTR

ForkRockShox ZEB Ultimate

ShockRockShox Super Deluxe

Ebike MotorBosch

Ebike Battery625 Wh

BrakesShimano XTR

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Specifications

Frame

OCLV Mountain Carbon main frame, 1.8'' lower head tube, Bosch System Controller-compatible, Removable Integrated Battery (RIB), Knock Block 2.0, guided internal routing, 34.9 mm seat tube, magnesium rocker link, Motor Armour, Mino Link, ABP, Boost148, 12 mm thru-axle, 150 mm travel

Frame Sizes

S, M, L, XL, XXL

Frame Colors

Deep Smoke

Ebike System

Motor

Bosch Performance Line CX Race Edition, smart system, magnesium motor body, 85 Nm, 20 mph or 32 km/h max assist (25 km/h max assist in EU and APAC)

Battery

Size: SBosch PowerTube 625Wh, smart system | Size: M, L, XLBosch PowerTube 750Wh, smart system

Charger

Suspension

Fork

RockShox ZEB Ultimate, AirWiz, DebonAir spring, Charger 3 RC2 damper, 1.8" oversized tapered steerer, eMTB optimised crown, 44 mm offset, Boost110, 15 mm Maxle Stealth, 160 mm travel

Rear Shock

RockShox Super Deluxe Thru Shaft, AirWiz, 230 mm x 57.5 mm

Cockpit

Stem

Bontrager Line Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 45 mm length

Handlebars

Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width

Tape/Grips

Bontrager XR Trail Elite, nylon lock-on

Saddle

Bontrager Arvada, austenite rails, 138 mm width

Drivetrain

Rear Derailleur

Shimano XTR M9100, Shadow Plus, long cage, 51-T max cog

Shift Levers

Shimano XTR M9100, 12 speed

Cassette

Shimano XTR M9101, 10-51, 12-speed

Chain

Shimano Dura-Ace/XTR M9100, 12 speed

Crankset

E*thirteen E*spec Race carbon, 34T, 165 mm length

Chainrings

E*thirteen E*spec, 34T alloy, 55 mm chainline

Brakes

Front Brake

Shimano XTR M9120 4-piston hydraulic disc

Shift Levers

Front Brake Rotor

Shimano RT86, 6-bolt, 203 mm

Wheels

Front Rim

Rear Rim

Geometry Trek Rail 9.9 CX Race Gen 4

Size	S	M	L	XL
Body Height	155 - 165 cm	165 - 176 cm	177 - 188 cm	188 - 195 cm
Seat Tube Length (mm)	50	50	50	50
Seat Tube Angle	76.7°	76.7°	76.7°	76.7°
Head Tube Length (mm)	140	140	140	140
Head Tube Angle	64.2°	64.2°	64.2°	64.2°
Top Tube Length (mm)	67.3	67.3	67.3	67.3
Chainstay Length (mm)	448	448	448	448
Wheelbase (mm)	1314	1314	1314	1314
Standover (mm)	76.3	76.3	76.3	76.3
Stack (mm)	66	66	66	66
Reach (mm)	51.7	51.7	51.7	51.7
BB Offset (mm)	3.3	3.3	3.3	3.3
Trail (mm)	13.3	13.3	13.3	13.3
Wheel Size Front	29"	29"	29"	29"