Trek Rail 9.9 CXR Gen 4 2024
Bike details
Key information split into simple groups.
Bike summary
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Frame Carbon
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Wheels 29"
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Travel Front 160mm
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Travel Rear 150mm
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Fork RockShox ZEB Ultimate
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Groupset XTR, e*thirteen
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Suspension Full
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Motor Bosch 250W 85Nm mid-drive
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Battery Size: S, Bosch PowerTube 625Wh, smart system; Size: M, L, XL, Bosch PowerTube 750Wh, smart system
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Drivetrain 1 × 12
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Brakes Hydraulic Disc
Parts list
Main components, grouped by system.
Bike components
Frame
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, 34.9mm seat tube, magnesium rocker link, Motor Armor, Mino Link, ABP, Boost148, 12mm thru axle, 150mm travel
Suspension Fork
RockShox ZEB Ultimate, AirWiz, DebonAir spring, Charger 3 RC2 damper, 1.8'' oversized tapered steerer, eMTB optimized crown, 44mm offset, Boost110, 15mm Maxle Stealth, 160mm travel
Rear Shock
RockShox Super Deluxe Thru Shaft, AirWiz, 230mm x 57.5mm
Drivetrain
Rear Derailleur
Shimano XTR M9100, Shadow Plus, long cage, 51T max cog
Shift Levers
Shimano XTR M9100, 12 speed
Cassette
Shimano XTR M9101, 10-51, 12 speed
Crank
E*thirteen E*spec Race carbon, 34T, 165mm length
Bottom Bracket
Bosch, press-fit
Chain
Shimano Dura-Ace/XTR M9100, 12 speed
Pedals
VP-536 nylon platform
Wheels
Rims
Front: Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, Rear: Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle
Tires
Size: S, M, L, XL, Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50''; Size: S, M, L, XL, Bontrager SE6 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 120 tpi, 29x2.50''
Brakes
Brakes
Shimano XTR M9120 4-piston hydraulic disc
Cockpit
Stem
Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree, 45mm length
Handlebar
Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
Grips
Bontrager XR Trail Elite, nylon lock-on
Seat
Saddle
Bontrager Arvada, austenite rails, 138mm width
Seatpost
Size: S, Bontrager Line Elite Dropper, 100mm travel, MaxFlow, internal routing, 34.9mm, 345mm length; Size: M, Bontrager Line Elite Dropper, 150mm travel, MaxFlow, internal routing, 34.9mm, 440mm length; Size: L, Bontrager Line Elite Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 485mm length; Size: XL, Bontrager Line Elite Dropper, 200mm travel, MaxFlow, internal routing, 34.9mm, 550mm length
Motor & Battery
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: S, Bosch PowerTube 625Wh, smart system; Size: M, L, XL, Bosch PowerTube 750Wh, smart system
Charger
Bosch standard 4A, 110V, smart system
Fit data
Numbers for sizing and ride feel.
| Size | 15.5" High | 15.5" Low | 17.5" High | 17.5" Low | 19.5" High | 19.5" Low | 21.5" High | 21.5" Low |
|---|---|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.44 mm | 1.46 mm | 1.39 mm | 1.41 mm | 1.31 mm | 1.33 mm | 1.26 mm | 1.28 mm |
| Bottom Bracket Height | 346 mm | 341 mm | 346 mm | 341 mm | 346 mm | 341 mm | 346 mm | 341 mm |
| Front Center | 767 mm | 768 mm | 790 mm | 790 mm | 831 mm | 832 mm | 867 mm | 868 mm |
| Rake | 42 mm | 43 mm | 43 mm | 42 mm | 43 mm | 43 mm | 43 mm | 42 mm |
| Trail | 130 mm | 133 mm | 130 mm | 133 mm | 130 mm | 133 mm | 130 mm | 133 mm |
| Stack | 618 mm | 621 mm | 622 mm | 626 mm | 636 mm | 639 mm | 649 mm | 653 mm |
| Reach | 429 mm | 425 mm | 449 mm | 445 mm | 484 mm | 480 mm | 514 mm | 510 mm |
| Top Tube Length | 572 mm | 573 mm | 593 mm | 594 mm | 631 mm | 632 mm | 664 mm | 666 mm |
| Seat Tube Angle | 77.1 ° | 76.7 ° | 77.1 ° | 76.7 ° | 77.1 ° | 76.7 ° | 77.1 ° | 76.7 ° |
| Seat Tube Length | 410 mm | 410 mm | 420 mm | 420 mm | 450 mm | 450 mm | 500 mm | 500 mm |
| Head Tube Angle | 64.6 ° | 64.2 ° | 64.6 ° | 64.2 ° | 64.6 ° | 64.2 ° | 64.6 ° | 64.2 ° |
| Head Tube Length | 105 mm | 105 mm | 110 mm | 110 mm | 125 mm | 125 mm | 140 mm | 140 mm |
| Chainstay Length | 440 mm | 441 mm | 440 mm | 441 mm | 440 mm | 441 mm | 440 mm | 441 mm |
| Wheelbase | 1206 mm | 1207 mm | 1229 mm | 1229 mm | 1270 mm | 1271 mm | 1306 mm | 1307 mm |
| Bottom Bracket Drop | 27 mm | 33 mm | 27 mm | 33 mm | 27 mm | 33 mm | 27 mm | 33 mm |
| Standover Height | 754 mm | 749 mm | 766 mm | 761 mm | 763 mm | 758 mm | 761 mm | 756 mm |
| Wheels | 29" | 29" | 29" | 29" | 29" | 29" | 29" | 29" |
Model Overview
Rail 9.9 CXR Gen 4 is part of the Trek E Rail model. 66 e-bikes variations carry this model name so far. Check out the entire range from 2024 of this model, by clicking this link.
Model range prices
Trek Rail 7 Gen 3 2024 is the cheapest e-bike model and costs 5649$. Trek Rail 9.9 CXR Gen 4 2024 is the most expensive one and costs 13299$.
Safety
Make sure you wear a helmet on every ride, and that your bike performs well. In short, this means checking the tires, brakes, and chain to make sure everything is in good working order.
Enduro e-bikes average price
According to our calculations, the average cost of an Enduro e-bike that is reliable is 4785$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Enduro e-bike. In conclusion, always check e-bike reviews and their components before making a purchase to make sure you don’t overpay.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 13299$. Comparing this to the average Enduro e-bike price, we see that the price is 177.93% higher.
Average weight for Enduro e-bikes
The average weight for Enduro e-bikes is 23.3 kg (51.37 lbs). A lighter bike will give you some extra advantage when climbing. A heavier bike will have more speed for descents.
Trek Rail 9.9 CXR Gen 4 it’s weighing 22.45 kg (49.49 lbs). At this weight, is slightly lighter than average. To sum up, it’s 3.79% lighter than the average weight of Enduro e-bikes.
Internal Cable Routing
This bike has an internal cable routing. As a result, this helps to preserve the bike’s cables. No more cables around your bike.
Overview of components
Fork
This e-bike has the RockShox ZEB Ultimate fork installed. The fork’s travel is 160mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. In short, you should always ensure you have a good fork when purchasing a bike.
Rear Shock
As for the rear shock, this e-bike has the RockShox Super Deluxe Thru Shaft model, with a travel of 150mm. Bike rear shocks are a great way to increase comfort on the bike and give you more control when riding on technical trails. To sum up, get a full-suspension bike if you want the smoothest rides.
Wheels
When leaving the production line, the Rail 9.9 CXR Gen 4 model has 29″ carbon wheels. Having 29″ wheels means that you need less fork travel, leading to a reduction of the pedal bob effect. However, the 29″ wheels will add a little more weight to the e-bike itself.
Brakes
For your safety, it is important to have quality breaks on your bike. Trek Rail 9.9 CXR Gen 4 has Hydraulic Disc brakes installed. Hydraulic disc brakes provide amazing stopping power, no matter what the terrain. To sum up, your safety is in good hands.
Dropper post
Trek Rail 9.9 CXR Gen 4 comes with a dropper post. Needless to say, a dropper post will come in handy on climbs and descends. You’ll fall in love with it at first sight!
