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2015 Trek Session 9.9 DH 27.5 Bike (discontinued)

Average User Rating: (Spectacular)
Trek Session 9.9 DH 27.5
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Trek Session 9.9 2015

The Good:

The bike as a whole is amazing. Suspension design is spectacular, soaking up everything the trail throws at you. The biggers wheels matched with suspension makes this bike the ultimate downhill machine. I found my self going faster and feeling more confident through rock gardens. Super predictable, great traction, and the cornering is unreal.

The Bad:

Absolutely nothing

Overall Review:

This really is the complete package. If your a serious racer this is the way to go.


Product Trek Session 9.9 DH 27.5 Bike
Model Year 2015
Riding Type Downhill
Rider Unisex
Sizes and Geometry
S (Low/High), M (Low/High), L (Low/High), XL (Low/High) View Geometry
Size S (Low/High) M (Low/High) L (Low/High) XL (Low/High)
Top Tube Length 18.78"/22.44" 20.28"/23.23" 21.22"/24.17" 22.99"/25.12"
Head Tube Angle 63.6°, 64.2° 63.6°, 64.2° 63.6°, 64.2° 63.6°, 64.2°
Head Tube Length 4.53" 4.53" 4.53" 4.53"
Seat Tube Angle 57.0°/57.6° 57.0°/57.6° 57.0°/57.6° 57.0°/57.6°
Seat Tube Length 15.35" 15.35" 15.35" 15.35"
Bottom Bracket Height 14.02"/14.33" 14.02"/14.33" 14.02"/14.33" 14.02"/14.33"
Chainstay Length 17.52"/17.44" 17.52"/17.44" 17.52"/17.44" 17.52"/17.44"
Wheelbase 46.57"/46.65" 47.36"/47.44" 48.31"/48.39" 49.25"/49.33"
Standover 31.65"/31.89" 31.10"/31.22" 30.87"/31.10" 30.20"/30.51"
Reach 15.04"/15.31" 15.83"/16.06" 16.77"/17.01" 17.72"/17.95"
Stack 23.90"/23.74" 23.90"/23.74" 23.90"/23.74" 23.90"/23.74"
Wheel Size 27.5" (650b)
Frame Material Carbon Fiber
Frame Material Details Carbon with InTension Main Frame, OCLV Stays, Carbon Armor, Integrated Frame Protection, Internal Control Routing
Rear Travel 210mm
Rear Shock FOX VAN RC4, Adjustable Spring Preload, Rebound, Low-Speed Compression, 8.75x2.75"
Fork FOX Factory Series 40 FIT RC2 with Air Spring, Kashima Coat, Hi/Lo Speed Compression, Rebound, 20mm Thru Axle
Fork Travel 203mm
Head Tube Diameter Tapered
Headset Cane Creek IS-3, E2, Alloy Cartridge
Handlebar Bontrager Rhythm Pro Carbon Riser, 31.8mm, 15mm Rise
Stem Bontrager Rhythm Pro Direct Mount, 31.8mm
Grips Bontrager Rhythm, Dual Lock-On
Brakes Shimano Saint Hydraulic Disc
Brake Levers Shimano Saint
Drivetrain 1x
Shifters Shimano Saint, 10-Speed
Front Derailleur N/A
Rear Derailleur Shimano Saint, Shadow Plus
ISCG Tabs Yes
Chainguide MRP G3
Cranks Shimano Saint
Chainrings 36 Tooth
Bottom Bracket
Pedals Wellgo MG-1
Chain Shimano XTR
Cassette Shimano Ultegra 11-25 Tooth, 10-Speed
Rims DT Swiss FR1950 Gravity Classic Wheels
Hubs DT Swiss FR1950 Gravity Classic Wheels
Spokes DT Swiss FR1950 Gravity Classic Wheels
Tires Bontrager G4 Team Issue, 27.5"x2.35"
Saddle Bontrager Evoke 3, Hollow Titanium Rails
Seatpost Bontrager Rhythm Elite, 2-Bolt Head, Zero Offset
Seatpost Diameter 31.6mm
Seatpost Clamp Standard
Rear Dropout / Hub Dimensions 157mm x 12mm
Max. Tire Size
Bottle Cage Mounts N/A
Colors Viper Red
Warranty 3 Years Frame
Weight N/A
Miscellaneous Mino Link Adjustable Geometry
Price $8,929.99
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