Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2018 Trek Session 9.9 DH 27.5 Race Shop Limited
Value Guide market data · 2018 Trek Session 9.9 DH 27.5 Race Shop Limited
12-month trend
9%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2018 Trek Session 9.9 DH 27.5 Race Shop Limited
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Session model years
2025$6,975 - $8,100▼ 6% vs. 2018
2024$5,115 - $5,940▼ 31% vs. 2018
2023$6,696 - $7,776▼ 10% vs. 2018
2022$6,538 - $7,592▼ 12% vs. 2018
2020$7,440 - $8,6400% vs. 2018
2019$7,812 - $9,072▲ 5% vs. 20182018$7,440 - $8,640Currently viewing
2017$9,300 - $10,800▲ 25% vs. 2018
2016$9,300 - $10,800▲ 25% vs. 2018
2015$8,305 - $9,644▲ 12% vs. 2018
2014$8,277 - $9,612▲ 11% vs. 2018
2013$8,305 - $9,644▲ 12% vs. 2018
2012$8,305 - $9,644▲ 12% vs. 2018
2011$6,147 - $7,139▼ 17% vs. 2018
2010$5,617 - $6,523▼ 25% vs. 2018
2009$5,933 - $6,890▼ 20% vs. 2018
2007$3,255 - $3,780▼ 56% vs. 2018
2006$4,650 - $5,400▼ 37% vs. 2018
2005$2,558 - $2,970▼ 66% vs. 20182018 Session 9.9 DH 27.5 Race Shop Limited lineup
Overview
About this bike
2018 Trek Session 9.9 DH 27.5 Race Shop Limited value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Rear Shock
- Fox Factory Float X2, high/low speed rebound adjust, high/low speed compression adjust, tuned by Trek Suspension Lab, 225x75mm
- Fork
- Fox Factory 40 FIT RC2, air spring, Kashima Coat, hi/lo speed compression, 203mm travel
- Frame
- OCLV Mountain Carbon main frame & stays, ABP, magnesium EVO Link, E2 tapered head tube, Mino Link, integrated frame protection, Control Freak internal routing, Carbon Armor, ISCG mount, 210mm travel
Drivetrain
- Groupset
- 2018 Trek Session 9.9 DH 27.5 Race Shop Limited
- Bottom Bracket
- Sealed cartridge
- Chain
- Shimano XTR
- Front Derailleur
- Shimano Saint, Shadow Plus
- Cassette/Rear Cogs
- Shimano Ultegra, 11-25, 10 speed
- Shifters
- Shimano Saint, 10 speed
Brakes
- Brakes
- Shimano Saint M820 hydraulic disc
Cockpit
- Saddle
- Bontrager Evoke 3, titanium rails
- Headset
- FSA Orbit, sealed cartridge bearing, 1-1/8" top, 1.5" bottom (includes geometry adjust angled cups)
- Stem
- Bontrager Line Pro Direct Mount, 35mm clamp, 50mm length
- Handlebars
- Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 820mm width
- Seat Post
- Bontrager Rhythm Elite, 2-bolt head, 31.6mm, zero offset
- Tape/Grips
- Bontrager Rhythm, dual lock-on
Wheels & Tires
- Tires
- Bontrager G4 Team Issue, 27.5 x 2.35"
- Axles
- Front: 110x20mm</br>Rear: 157x12mm
Pedals
- Pedals
- Wellgo MG-1, magnesium body, Cro-Mo axle, replaceable pins
Accessories
- Rims/Wheels
- DT Swiss FR1950 Gravity Classic
- Color
- Viper Red
Weight & Sizing
- Size
- Small / Medium / Large / X-Large
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.