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It's right for you if...
You're a regular on the lifts and at the bike park. You're looking for a playful, versatile, durable DH rig with proven performance and a park-ready geometry, and want a lot of tech for your money.
The tech you get
An Alpha Platinum Aluminum frame with Mino Link adjustable geometry, a 200mm RockShox Boxxer Select fork with plush DebonAir spring, 210mm of rear travel with an adjustable FOX Performance VAN shock, 27.5˝ Bontrager Line DH 30 wheels, SRAM Guide R brakes, and a DH-specific SRAM GX 7-speed drivetrain. Race, rip, ride. This bike does it all.
The final word
Fast, durable, agile, and stable. Session 8 is fully capable of taking on the gnarliest descents, the biggest jumps, and the burliest trails. It's a versatile, confidence-inspiring ride with the best in DH tech and a geometry that's not so low and long that it doesn't play nice at the park.
See it in action
favorite_borderWhy you'll love it
- Session 8 has the heart of a monster truck: it rolls over everything, gives you the confidence to take on rougher trails, and saves you when you don't take the right line
- The quality suspension setup paired with our ABP frame design is made to keep you in control
- The durable, DH-specific 7-speed drivetrain keeps things simple, so you can focus on shredding and getting rad
- Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride
- 27.5 wheels are great for flicking the bike around through the most technical trail
Features
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.
Looks like a World Championship
Trek Factory Racing's Reece Wilson charged his way into the rainbow jersey aboard Session this year, taking all the right risks on a slick course and carving his name in Downhill's history books with a truly gutsy run.
Watch the winning run
Suspension Calculator
This suspension calculator will help you optimize your suspension settings for your riding weight. Simply follow the steps to find your best set up.
Learn more
Mino Link adjustable geometry
Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.
Learn more
Down tube guard
Replaceable external shield protects the down tube from trail debris.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Platinum Aluminum, tapered head tube, internal control routing, integrated frame protection, downtube guard, ISCG 05 mount, magnesium rocker link, Mino Link, ABP, 157x12mm thru axle, 210mm travel |
|---|---|
| Fork | RockShox Boxxer Select, DebonAir spring, Charger RC damper, 46mm offset, 20x110mm Boost thru axle, 200mm travel |
| *Shock |
Size:
S Fox Performance DHX, 400lb spring, 8.75x2.75'' |
|
Size:
M Fox Performance DHX, 450lb spring, 8.75x2.75'' |
|
|
Size:
L, XL Fox Performance DHX, 500lb spring, 8.75x2.75'' |
|
| Max compatible fork travel | 200mm |
| Wheel front | Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20mm Boost thru axle |
|---|---|
| Wheel rear | Bontrager Line DH 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano 7spd freehub 157x12mm thru axle |
| Skewer rear | Bontrager Switch thru axle, removable lever |
| Tire | Bontrager G4 Team Issue, Inner Strength sidewalls, wire bead, 60 tpi, 27.5x2.40'' |
| Max tire size | 27.5x2.40" |
| Shifter | SRAM GX DH, 7 speed |
|---|---|
| Rear derailleur | SRAM GX DH, medium cage |
| Crank | Truvativ Descendant DH, DUB 83, 34T steel ring, 165mm length |
| Bottom bracket | SRAM DUB, 83mm, BSA threaded |
| Cassette | SRAM PG-720, 11-25, 7 speed |
| Chain | SRAM PC-1110, 11 speed |
| Pedal | Wellgo BO-87B, alloy body, Cro-Mo axle, replaceable pins |
| Max chainring size | 36T |
| Saddle | Bontrager Arvada, hollow chromoly rails, 138mm width |
|---|---|
| Seatpost | Bontrager Rhythm Elite, 31.6mm, 0mm offset, 330mm length |
| Handlebar | Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width |
| Grips | Bontrager XR Trail Elite, alloy lock-on |
| Stem | Bontrager Line Pro, 35mm, Direct Mount, 50mm length |
| Headset | FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Brake | SRAM Guide R 4-piston hydraulic disc, 200mm front rotor, 180mm rear rotor |
| *Brake rotor |
Size:
S, M, L, XL SRAM CenterLine, 6-bolt, round edge, 180mm |
|
Size:
S, M, L, XL SRAM CenterLine, 6-bolt, round edge, 200mm |
| Weight | M - 16.27 kg / 35.87 lbs (with tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg). |
Sizing & fit
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
Rider Height
Inseam
S
153.0 - 166.5 cm
5'0.2" - 5'5.6"
72.0 - 79.0 cm
28.3" - 31.1"
M
161.0 - 175.0 cm
5'3.4" - 5'8.9"
76.0 - 82.0 cm
29.9" - 32.3"
L
174.0 - 188.0 cm
5'8.5" - 6'2.0"
82.0 - 88.0 cm
32.3" - 34.6"
XL
186.0 - 196.0 cm
6'1.2" - 6'5.2"
87.0 - 92.0 cm
34.3" - 36.2"
All measurements provided in cm unless otherwise noted.
| Frame size letter | Geometry position | Wheel size | A — Seat tube | B — Seat tube angle | C — Head tube length | D — Head angle | E — Effective top tube | F — Bottom bracket height | G — Bottom bracket drop | H — Chainstay length | I — Offset | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S | High | 27.5" | 42.6 | 57.6° | 11.5 | 64.2° | 57.0 | 36.4 | 0.9 | 44.3 | 5.2 | 11.4 | 118.5 | 81.0 | 38.9 | 60.3 |
| M | High | 27.5" | 42.6 | 57.6° | 11.5 | 64.2° | 59.0 | 36.4 | 0.9 | 44.3 | 5.2 | 11.4 | 120.5 | 79.3 | 40.8 | 60.3 |
| L | High | 27.5" | 45.6 | 57.6° | 11.5 | 64.2° | 61.4 | 36.4 | 0.9 | 44.3 | 5.2 | 11.4 | 122.9 | 79.0 | 43.2 | 60.3 |
| XL | High | 27.5" | 45.6 | 57.6° | 11.5 | 64.2° | 63.8 | 36.4 | 0.9 | 44.3 | 5.2 | 11.4 | 125.3 | 77.5 | 45.6 | 60.3 |
| S | Low | 27.5" | 42.6 | 57.0° | 11.5 | 63.6° | 57.4 | 35.6 | -0.1 | 44.5 | 5.2 | 11.8 | 118.3 | 80.4 | 38.2 | 60.7 |
| M | Low | 27.5" | 42.6 | 57.0° | 11.5 | 63.6° | 59.4 | 35.6 | -0.1 | 44.5 | 5.2 | 11.8 | 120.3 | 79.0 | 40.2 | 60.7 |
| L | Low | 27.5" | 45.6 | 57.0° | 11.5 | 63.6° | 61.8 | 35.6 | -0.1 | 44.5 | 5.2 | 11.8 | 122.7 | 78.4 | 42.6 | 60.7 |
| XL | Low | 27.5" | 45.6 | 57.0° | 11.5 | 63.6° | 64.2 | 35.6 | -0.1 | 44.5 | 5.2 | 11.8 | 125.1 | 76.7 | 45.0 | 60.7 |
