MountainE-bikeVerified spec
2021 Trek Rail 9.9 XTR
Launched at $11,500
Own a 2021 Trek Rail 9.9 XTR?
Track its value in your garage, or list it for sale locally in a few taps.
What a used one is worth
Open the value toolNew
$6,426
$4,150 to $7,742
Like new
$6,105
$3,942 to $7,355
Excellent
$5,783
$3,735 to $6,968
Good
$4,820
$3,112 to $5,807
Fair
$3,534
$2,282 to $4,258
For parts
$1,928
$1,245 to $2,323
From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.
Overview
- Brand
- Trek
- Model family
- Rail
- Model year
- 2021
- Category
- Mountain · enduro
- Frame material
- carbon
- Sizes
- S, M, L, XL
- Wheel size
- 29
- Launch MSRP (US)
- $11,500
Drivetrain
- Speeds
- 12
- Groupset
- Shimano XTR
- Electronic
- false
Build
- Fork
- RockShox ZEB Ultimate, DebonAir spring, Charger 2.1 RC2 damper, e-MTB optimized crown, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 160mm travel
- Stem
- Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree
- Tires
- Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewall, aramid bead, 60 tpi, 29x2.60"
- Brakes
- Shimano XTR M9120 4-piston hydraulic disc
- Saddle
- Bontrager Arvada, austenite rails, 138mm width
- Wheels
- NEW Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110 front, Boost148 rear
- Cassette
- Shimano XTR M9100, 10-51, 12 speed
- Crankset
- E*thirteen E*spec Race carbon, 34T
- Seatpost
- Bontrager Line Elite Dropper, internal routing, 31.6mm
- Shifters
- Shimano XTR M9100, 12 speed
- Handlebar
- Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise
- Weight kg
- 21.71
- Rear shock
- NEW RockShox Super Deluxe Ultimate RT3, DebonAir spring, Thru Shaft 3-position damper, 230x57.5mm
- Travel rear mm
- 150
- Rear derailleur
- Shimano XTR M9100, Shadow Plus, long cage, 51T max cog
- Travel front mm
- 160
Motor and battery
- Motor
- Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 20mph or 32km/h max assist
- Assist mph
- 20
- Battery wh
- 625
Geometry
- 15.5
- Reach mm: 425; Stack mm: 623; Chainstay mm: 447; Wheelbase mm: 1195; Head angle deg: 64.9
- 17.5
- Reach mm: 450; Stack mm: 622; Chainstay mm: 447; Wheelbase mm: 1220; Head angle deg: 64.9
- 19.5
- Reach mm: 470; Stack mm: 627; Chainstay mm: 447; Wheelbase mm: 1243; Head angle deg: 64.9
- 21.5
- Reach mm: 499; Stack mm: 636; Chainstay mm: 447; Wheelbase mm: 1277; Head angle deg: 64.9
Price as shown on Trek's US site, 2020-09 capture.
For sale now
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Other Rail builds and years
- 2026 Rail+ 9.7 Gen 5$8,000
- 2026 Rail+ 9.8 GX AXS T-Type Gen 5$10,000
- 2026 Rail+ 9.9 X0 AXS T-Type Gen 5$11,500
- 2025 Rail+ 9.7 Gen 5
- 2025 Rail+ 9.8 GX AXS T-Type Gen 5
- 2025 Rail+ 9.9 X0 AXS T-Type Gen 5
- 2024 Rail 7 Gen 3$5,650
- 2024 Rail 8 GX AXS T-Type Gen 3
- 2024 Rail 9.7 Gen 4$7,000
- 2024 Rail 9.8 GX AXS T-Type Gen 4
- 2024 Rail 9.8 XT Gen 4$9,000
- 2024 Rail 9.9 CXR Gen 4$13,300
- 2024 Rail 9.9 X0 AXS T-Type Gen 4$11,300
- 2023 Rail 5 Gen 3
- 2023 Rail 7 Gen 3
- 2023 Rail 9.7 Gen 4
- 2023 Rail 9.8 GX AXS Gen 4
- 2023 Rail 9.8 XT Gen 4
- 2023 Rail 9.9 CXR Gen 4
- 2023 Rail 9.9 XTR Gen 4
- 2023 Rail 9.9 XX1 AXS Gen 4
- 2022 Rail 5 Gen 2$5,600
- 2022 Rail 7 Gen 2
- 2022 Rail 9.7 Gen 2
- 2022 Rail 9.8 GX AXS Gen 3
- 2022 Rail 9.8 GX Gen 3
- 2022 Rail 9.8 XT Gen 3
- 2022 Rail 9.9 XTR Gen 3
- 2022 Rail 9.9 XX1 AXS Gen 3
- 2021 Rail 5$5,000
- 2021 Rail 7$6,000
- 2021 Rail 9.7$6,500
- 2021 Rail 9.8$8,000
- 2021 Rail 9.8 XT$8,000
- 2021 Rail 9.9$10,000
- 2021 Rail 9.9 X01 AXS$12,500
- 2020 Rail 5$5,000
- 2020 Rail 7$6,000
- 2020 Rail 9.7$6,500
- 2020 Rail 9.8
- 2020 Rail 9.8 XT
- 2020 Rail 9.9$12,000
- 2020 Rail 9.9 XTR