Trek Session 8 27.5 2021
2021 Mountain
Estimate price |
4,799$
Weight | 16.27 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 27.5" -
Travel Front 200mm -
Travel Rear 210mm -
Fork RockShox BoXXer Select
-
Groupset GX, Truvativ Descendant -
Suspension Full -
Drivetrain 1 × 7 -
Brakes Hydraulic Disc
Parts list
Components
Main components, grouped by system.
Bike components
Frame
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
Suspension Fork
RockShox Boxxer Select, DebonAir spring, Charger RC damper, 46mm offset, 20x110mm Boost thru axle, 200mm travel
Rear 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''
Drivetrain
Rear Derailleur
SRAM GX DH, medium cage
Shift Levers
SRAM GX DH, 7 speed
Cassette
SRAM PG-720, 11-25, 7 speed
Crank
Truvativ Descendant DH, DUB 83, 34T steel ring, 165mm length
Bottom Bracket
SRAM DUB, 83mm, BSA threaded
Chain
SRAM PC-1110, 11 speed
Wheels
Rims
Bontrager Line DH 30, Tubeless Ready, 6-bolt, 110x20mm Boost thru axle
Tires
Bontrager G4 Team Issue, Inner Strength sidewalls, wire bead, 60 tpi, 27.5x2.40''
Brakes
Brakes
SRAM Guide R 4-piston hydraulic disc, 200mm front rotor, 180mm rear rotor
Disk Rotors
Size: S, M, L, XL, SRAM CenterLine, 6-bolt, round edge, 180mm; Size: S, M, L, XL, SRAM CenterLine, 6-bolt, round edge, 200mm
Cockpit
Stem
Bontrager Line Pro, 35mm, Direct Mount, 50mm length
Handlebar
Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width
Grips
Bontrager XR Trail Elite, alloy lock-on
Headset
FSA Orbit, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
Seat
Saddle
Bontrager Arvada, hollow chromoly rails, 138mm width
Seatpost
Bontrager Rhythm Elite, 31.6mm, 0mm offset, 330mm length
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM High | SM Low | MD High | MD Low | LG High | LG Low | XL High | XL Low |
|---|---|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.56 mm | 1.6 mm | 1.49 mm | 1.52 mm | 1.4 mm | 1.43 mm | 1.33 mm | 1.36 mm |
| Bottom Bracket Height | 364 mm | 356 mm | 364 mm | 356 mm | 364 mm | 356 mm | 364 mm | 356 mm |
| Front Center | 742 mm | 738 mm | 762 mm | 758 mm | 786 mm | 782 mm | 810 mm | 806 mm |
| Rake | 59 mm | 49 mm | 60 mm | 49 mm | 60 mm | 49 mm | 60 mm | 49 mm |
| Trail | 114 mm | 118 mm | 114 mm | 118 mm | 114 mm | 118 mm | 114 mm | 118 mm |
| Stack | 595 mm | 599 mm | 595 mm | 599 mm | 595 mm | 599 mm | 595 mm | 599 mm |
| Reach | 381 mm | 374 mm | 400 mm | 394 mm | 424 mm | 418 mm | 448 mm | 442 mm |
| Top Tube Length | 562 mm | 566 mm | 582 mm | 586 mm | 606 mm | 610 mm | 630 mm | 634 mm |
| Seat Tube Angle | 57.6 ° | 57 ° | 57.6 ° | 57 ° | 57.6 ° | 57 ° | 57.6 ° | 57 ° |
| Seat Tube Length | 426 mm | 426 mm | 426 mm | 426 mm | 456 mm | 456 mm | 456 mm | 456 mm |
| Head Tube Angle | 64.2 ° | 63.6 ° | 64.2 ° | 63.6 ° | 64.2 ° | 63.6 ° | 64.2 ° | 63.6 ° |
| Head Tube Length | 115 mm | 115 mm | 115 mm | 115 mm | 115 mm | 115 mm | 115 mm | 115 mm |
| Chainstay Length | 435 mm | 437 mm | 435 mm | 437 mm | 435 mm | 437 mm | 435 mm | 437 mm |
| Wheelbase | 1177 mm | 1175 mm | 1197 mm | 1195 mm | 1221 mm | 1219 mm | 1245 mm | 1243 mm |
| Bottom Bracket Drop | 9 mm | -1 mm | 9 mm | -1 mm | 9 mm | -1 mm | 9 mm | -1 mm |
| Standover Height | 802 mm | 796 mm | 785 mm | 782 mm | 782 mm | 776 mm | 767 mm | 759 mm |
| Wheels | 27" | 27" | 27" | 27" | 27" | 27" | 27" | 27" |
About this model
Session 8 27.5 belongs to the Trek Session model. 88 bikes variations carry this model name so far. You can get a glimpse at all models from 2021, by clicking on this link.
Model range prices
The most economical model, the Trek Session 8 27.5 2021 has a starting price of 4799$. Trek Session 9.9 29 2021 on the other hand is the most expensive at 7999$.
Safety
Your safety should be the top priority when you go for a ride. In short, make sure that you always use a helmet, high visibility clothing, and proper lights when riding at night-time.
Average price for Downhill bikes
If you want an acceptable Downhill bike you should know that the average price is 3391$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Downhill bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
This bike was released in 2021 and its price was 4799$. Comparing this to the average Downhill bike price, we see that the price is 41.52% more expensive.
Average weight for Downhill bikes
If we make a quick analysis of the average weight of a Downhill bike, we get 15.89 kg (35.03 lbs). An easier bike will give you a big advantage in climbs. However, a heavier bike can gain speed when you descend.
Session 8 27.5 weighs 16.27 kg (35.87 lbs) and is slightly heavier than the average. To sum up, it’s 2.39% heavier than the average weight of Downhill bikes.
Internal Cable Routing
This bike has an internal cable routing. As a result, this helps to preserve the bike’s cables. No more cables around your bike.
Session 8 27.5 components
Fork
The Session 8 27.5 comes factory-installed with the RockShox BoXXer Select fork. This has a travel range of 200mm. Bike forks are perfect to absorb shocks and provide a great riding experience overall. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Rear Shock
As for the rear shock, this bike has the Size: S model, with a travel of 210mm. Bike rear shocks are a great way to increase comfort on the bike and give you more control when riding on technical trails. To sum up, always consider getting a bike that has a rear shock as well.
Wheels size
The wheels on Session 8 27.5 are the 27.5″ aluminum type. The 27.5″ wheels are a great choice for smaller riders. However, these wheels have a slower top speed if you compare them to 29″ wheels.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, you can ride your bike with confidence.