Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2020 Trek Session 9.9 29
Value Guide market data · 2020 Trek Session 9.9 29
12-month trend
9%
Direction and magnitude, not judgment
vs. category average
11%
Drops faster than category avg
Price over time - 2020 Trek Session 9.9 29
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. 2020
2024$5,115 - $5,940▼ 31% vs. 2020
2023$6,696 - $7,776▼ 10% vs. 2020
2022$6,538 - $7,592▼ 12% vs. 20202020$7,440 - $8,640Currently viewing
2019$7,812 - $9,072▲ 5% vs. 2020
2018$7,440 - $8,6400% vs. 2020
2017$9,300 - $10,800▲ 25% vs. 2020
2016$9,300 - $10,800▲ 25% vs. 2020
2015$8,305 - $9,644▲ 12% vs. 2020
2014$8,277 - $9,612▲ 11% vs. 2020
2013$8,305 - $9,644▲ 12% vs. 2020
2012$8,305 - $9,644▲ 12% vs. 2020
2011$6,147 - $7,139▼ 17% vs. 2020
2010$5,617 - $6,523▼ 25% vs. 2020
2009$5,933 - $6,890▼ 20% vs. 2020
2007$3,255 - $3,780▼ 56% vs. 2020
2006$4,650 - $5,400▼ 37% vs. 2020
2005$2,558 - $2,970▼ 66% vs. 20202020 Session 9.9 29 lineup
Overview
About this bike
2020 Trek Session 9.9 29 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- RockShox Boxxer Ultimate, DebonAir spring, Charger 2 RC2 damper, straight steerer, 46mm offset, 190mm travel
- Frame
- OCLV Mountain Carbon main frame & stays, tapered head tube, integrated frame protection, Control Freak internal routing, magnesium rocker link, Mino Link, ISCG mount, ABP, 190mm travel
- Rear Shock
- RockShox Super Deluxe Ultimate DH, 225x70mm
Drivetrain
- Groupset
- SRAM X01
- Bottom Bracket
- SRAM DUB, 83mm, BSA threaded
- Cassette
- SRAM PG-720, 11-25, 7 speed
- Chain
- SRAM PC-1110, 11 speed
- Chainrings
- 36T
- Crankset
- SRAM X01 DH, DUB 83, 165mm length
- Rear Derailleur
- SRAM X01 DH
- Shifters
- SRAM X01 DH, 7 speed
Brakes
- Brakes
- SRAM Code RSC hydraulic disc, SRAM CenterLine, 6-bolt, round-edge, 180mm
Cockpit
- Handlebar
- Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width
- Headset
- FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
- Saddle
- Bontrager Arvada, austenite rails, 138mm width
- Seatpost
- Bontrager Rhythm Elite, 31.6mm, 0mm offset, 330mm length
- Stem
- Bontrager Line Pro, 35mm, Direct Mount, 50mm length
- Grips
- Bontrager XR Trail Elite, alloy lock-on
Wheels & Tires
- Axles
- Front: Boost, 110x20mm Maxle Stealth, Rear: 12x157mm thru axle
- Front Tire
- Bontrager G5 Team Issue, wire bead, 2-ply 60 tpi, 29x2.50''
- Rims
- Front; Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20mm Boost thru axle Rear; Bontrager Line DH 30, Tubeless Ready, 6-bolt, Shimano 7 speed freehub, 157x12mm thru axle
Pedals
- Pedals
- Wellgo MG-1, magnesium body, Cro-Mo axle, replaceable pins
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.