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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 Aluminium frame with Mino Link adjustable geometry, a 200 mm RockShox Boxxer Select fork with plush DebonAir spring, 210 mm 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 nicely 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 set-up 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 trails
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 optimise 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 Aluminium, tapered head tube, internal control routing, integrated frame protection, downtube guard, ISCG 05 mount, magnesium rocker link, Mino Link, ABP, 157x12 mm thru axle, 210 mm travel |
|---|---|
| Fork | RockShox Boxxer Select, DebonAir spring, Charger RC damper, 46 mm offset, 20x110 mm Boost thru axle, 200 mm travel |
| *Shock |
Size:
S Fox Performance DHX, 181 kg/400 lb spring, 8.75x2.75" |
|
Size:
M Fox Performance DHX, 204 kg/450 lb spring, 8.75x2.75" |
|
|
Size:
L, XL Fox Performance DHX, 226 kg/500 lb spring, 8.75x2.75" |
|
| Max compatible fork travel | 200mm |
| Wheel front | Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20 mm Boost thru axle |
|---|---|
| Wheel rear | Bontrager Line DH 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano 7spd freehub 157x12 mm thru axle |
| Skewer rear | Bontrager Switch thru-axle, removable lever |
| Tyre | Bontrager G4 Team Issue, Inner Strength sidewalls, wire bead, 60 tpi, 27.5x2.40'' |
| Rim strip | Bontrager TLR |
| Max tyre size | Frame: 27.5x2.40" Fork: See manufacturer |
| Shifter | SRAM GX DH, 7-speed |
|---|---|
| Rear derailleur | SRAM GX DH, medium cage |
| Crank | Truvativ Descendant DH, DUB 83, 34-T steel ring, 165 mm length |
| Bottom bracket | SRAM DUB, 83 mm, 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, 138 mm width |
|---|---|
| Seatpost | Bontrager Rhythm Elite, 31.6 mm, 0 mm offset, 330 mm length |
| Handlebar | Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width |
| Grips | Bontrager XR Trail Elite, alloy lock-on |
| Stem | Bontrager Line Pro, 35 mm, Direct Mount, 50 mm length |
| Head set | FSA Orbit, sealed cartridge bearing, 1-1/8" top, 1.5" bottom |
| Brake | SRAM Guide R hydraulic disc, 200 mm front rotor, 180 mm rear rotor |
| *Brake rotor |
Size:
S, M, L, XL SRAM CenterLine, 6-bolt, round edge, 180 mm |
|
Size:
S, M, L, XL SRAM CenterLine, 6-bolt, round edge, 200 mm |
| Weight | M - 16.27 kg / 35.87 lb (with tubes) |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb). |
Sizing & Tech
Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.
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 stated.
| 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 |