Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2019 Trek Session 9.9 29
Value Guide market data · 2019 Trek Session 9.9 29
12-month trend
13%
Direction and magnitude, not judgment
vs. category average
12%
Drops faster than category avg
Price over time - 2019 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▼ 11% vs. 2019
2024$5,115 - $5,940▼ 35% vs. 2019
2023$6,696 - $7,776▼ 14% vs. 2019
2022$6,538 - $7,592▼ 16% vs. 2019
2020$7,440 - $8,640▼ 5% vs. 20192019$7,812 - $9,072Currently viewing
2018$7,440 - $8,640▼ 5% vs. 2019
2017$9,300 - $10,800▲ 19% vs. 2019
2016$9,300 - $10,800▲ 19% vs. 2019
2015$8,305 - $9,644▲ 6% vs. 2019
2014$8,277 - $9,612▲ 6% vs. 2019
2013$8,305 - $9,644▲ 6% vs. 2019
2012$8,305 - $9,644▲ 6% vs. 2019
2011$6,147 - $7,139▼ 21% vs. 2019
2010$5,617 - $6,523▼ 28% vs. 2019
2009$5,933 - $6,890▼ 24% vs. 2019
2007$3,255 - $3,780▼ 58% vs. 2019
2006$4,650 - $5,400▼ 40% vs. 2019
2005$2,558 - $2,970▼ 67% vs. 20192019 Session 9.9 29 lineup
Overview
About this bike
2019 Trek Session 9.9 29 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Fox Factory 40 FIT RC2, air spring, Kashima Coat, hi/lo speed compression, Boost 110x20 thru axle, 190mm travel
- Frame
- OCLV Mountain Carbon main frame & stays, ABP, magnesium EVO Link, tapered head tube, Mino Link, integrated frame protection, Control Freak internal routing, Carbon Armor, ISCG mount, 190mm travel
- Rear Shock
- Fox Factory Float X2, high/low speed rebound adjust, high/low speed compression adjust, tuned by Trek Suspension Lab, 225x70mm
Drivetrain
- Groupset
- Shimano XT
- Bottom Bracket
- Shimano SM-BB80, 83mm
- Cassette
- Shimano CS-5700, 11-25, 10 speed
- Chain
- KMC X10
- Chainrings
- 36T
- Crankset
- Shimano Saint M825 w/MRP G4 carbon chainguide
- Rear Derailleur
- Shimano Saint M820, Shadow Plus
- Shifters
- Shimano Saint, 10 speed
Brakes
- Brakes
- Shimano Saint M820 hydraulic disc
Cockpit
- Handlebar
- Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 820mm width
- Headset
- FSA Orbit, sealed cartridge bearing, 1-1/8-inch top, 1.5-inch bottom (includes geometry adjust angled cups)
- Saddle
- Bontrager Arvada, austenite rails
- Seatpost
- Bontrager Rhythm Elite, 31.6mm, 0mm offset
- Stem
- Bontrager Line Pro Direct Mount, 35mm clamp, 50mm length
- Grips
- Bontrager XR Trail Elite, alloy lock-on
Wheels & Tires
- Axles
- Front: 110 x 20mm, Rear: 157 x 12mm
- Front Tire
- Bontrager G5 Team Issue, wire bead, 29 x 2.50
- Rims
- Bontrager Line DH 30, Tubeless Ready w/7 speed DH freehub
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.