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The Rail 9.9 is Trek's best long-travel electric mountain bike.
The Rail 9.9 is Trek's best long-travel electric mountain bike.
Trek

Trek Rail 9.9 XTR Gen 4 Full Suspension Electric Mountain Bike 2023 in Lava Red

£9,260.00 £10,650.00 13% off
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Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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Hassle free returns

In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.




Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Trek Rail 9.9 XTR Gen 4 Full Suspension Electric Mountain Bike 2023 in Lava Red

Season:2024

Brand:Trek

Code:37066RED

The Rail 9.9 is Trek's best long-travel electric mountain bike. You get an extra-beefy carbon frame, unbelievably smooth RockShox suspension, super-precise Shimano XTR drivetrain and a powerful Bosch Performance Line CX motor with an extra-long range battery and smart system, plus the new Mini Remote and System Controller display that sits flush with the top tube and pairs with the eBike Flow app to give you activity tracking, navigation and Bluetooth connectivity.

The Rail 9.9 is all about top-shelf tech. RockShox’s best enduro fork, Bosch’s biggest battery, the super-refined shifting of XTR, an updated frame and AirWiz pressure monitoring, plus Bosch’s latest tech with smart system.

You want to spare no expense on your e-MTB experience. You want the most adjustability, smoothest performance, longest range and most high-tech electric assist you can get. You love customisation and want all the cool features of the Bosch smart system.

An upgraded OCLV Mountain Carbon frame with longer reach and oversized head tube and seat tube for maximum strength. An extra-long-range 750 Wh battery, ultra-adjustable RockShox ZEB Ultimate fork, RockShox Super Deluxe Ultimate Thru Shaft shock and ultra-responsive Shimano XTR 1x12 drivetrain. You get Bosch’s smart system Performance Line CX with a new Mini Remote and Bluetooth® System Controller display that’s integrated into the top tube.

Key Features & Benefits:

  • Bosch Performance CX motor:With smart system, perfect for tackling the climbs.
  • Intelligent e-MTB mode:Automatically delivers the right amount of power based on your terrain.
  • Shimano XTR 1x12 Drivetrain:Simplicity combined with a wide gear ratio.

Full 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
  • 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 Ultimate RT, 230mm x 57.5mm
  • Motor:Bosch Performance Line CX, smart system, magnesium motor body, 85 Nm, 15.5 mph max assist
  • Battery:Bosch PowerTube 625, smart system (Size S), Bosch PowerTube 750Wh, smart system (Size M, L, XL)
  • Controller:Bosch System Controller BRC3100, smart system or Bosch Mini Remote BRC3300, smart system, 22.2 mm
  • Charger:Bosch standard 4A Charger, 230V, smart system
  • Number of Gears:12
  • Gear Shifters:Shimano XTR M9100, 12 speed
  • Chainset:FE*thirteen E*spec Race carbon, 34T, 165 mm length
  • Chainrings:34T
  • Rear Cassette:Shimano XTR M9101, 10-51, 12-speed
  • Chain:Shimano Dura-Ace/XTR M9100, 12 speed
  • Front Derailleur:N/A
  • Rear Derailleur:Shimano XTR M9100, Shadow Plus, long cage, 51-T max cog
  • Pedals:Wellgo VPE-536
  • Rims:Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready
  • Front Wheel:Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready, 6-bolt, Boost110, 15 mm thru-axle
  • Rear Wheel:Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost 148, 12 mm thru axle
  • Front Tyre:Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50"
  • Rear Tyre:Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50"
  • Brakes:Shimano XTR M9120 4-piston hydraulic disc
  • Handlebars:Bontrager Line Pro, OCLV Carbon, 35 mm, 27.5 mm rise, 780 mm width
  • Grips:Bontrager XT Trail Elite, nylon lock-on
  • Stem:Bontrager Line Pro, 35 mm, Knock Block, Blendr-compatible, 0-degree, 45 mm length
  • Saddle:Bontrager Arvada, austenite rails, 138 mm width
  • Seatpost:Bontrager Line Elite Dropper, 100 mm - 200 mm travel, MaxFlow, internal routing, 34.9 mm, 345 mm - 550 mm length, size dependent
  • Weight:M - 22.95 kg / 50.6 lbs
Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.

Sizing Chart for Trek Rail Gen 4

Frame SizeRider Height (cm)Rider Height (')Inseam (cm)Inseam (")
S155 - 165 cm5'1" - 5'5"74 - 78 cm29" - 31"
M165 - 176 cm5'5" - 5'9"79 - 83 cm31" - 33"
L177 - 188 cm5'10" - 6'2"84 - 89 cm33" - 35"
XL188 - 195 cm6'2" - 6'5"89 - 91 cm35" - 36"

Geometry Information for Trek Rail Gen 4

Frame size letterSSMMLLXLXL
Geometry positionLowHighLowHighLowHighLowHigh
Wheel size29"29"29"29"29"29"29"29"
A — Seat tube4141424245455050
B — Seat tube angle70.8°71.2°70.8°71.2°70.8°71.2°70.8°71.2°
Effective seat tube angle76.7°77.1°76.7°77.1°76.7°77.1°76.7°77.1°
C — Head tube length10.510.5111112.512.51414
D — Head angle64.2°64.6°64.2°64.6°64.2°64.6°64.2°64.6°
E — Effective top tube5857.960.16063.963.867.367.1
F — Bottom bracket height34.134.634.134.634.134.634.134.6
G — Bottom bracket drop3.32.73.32.73.32.73.32.7
H — Chainstay length44.844.744.844.744.844.744.844.7
I — Offset4.34.34.34.34.34.34.34.3
J — Trail13.31313.31313.31313.313
K — Wheelbase121.4121.3123.6123.6127.8127.7131.4131.3
L — Standover75.676.176.877.376.57776.376.8
M — Frame reach43.243.645.245.648.749.151.752.1
N — Frame stack62.862.563.362.964.664.36665.6




Warranty Information for Trek:

Lifetime warranty on Frame sets (frame and rigid fork), main frame and full suspension swing arms for the lifetime of the original owner, and Bontrager wheels with carbon rims.

2-year warranty on Rear suspension linkage components, including bearings, rocker link and accompanying hardware and components, Bontrager wheels with alloy rims, Paint and transfers.

For full warranty policy please visit trekbikes.com

Sizing Information
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