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2020 Trek Session 9.9 29 vs 2019 Trek Session C 29 Frameset

The Trek Session C 29 Frameset size closest to your M is the M. Compare the M instead

What changes on the Trek Session C 29 Frameset

Compared with the Trek Session 9.9 29 in M, the Trek Session C 29 Frameset in XL places the top of the head tube at about the same height and 46 mm further forward, relative to the bottom bracket. Its wheelbase is 46 mm longer, which can contribute to stability at speed.

Frame stack
±0 mm
About the same height
Frame reach
+46 mm
Longer frame reach
Wheelbase
+46 mm
Longer: steadier at speed
Head angle
±0.0°
About the same head angle
Chainstays
±0 mm
About the same

The two frames

2020 Trek Session 9.9 29 (M)The Trek Session 9.9 29 frame drawn to scale.J 1247

Only the Trek Session 9.9 29 is drawn. The Trek Session C 29 Frameset numbers we have for size XL are missing the seat angle.

Geometry side by side

MeasurementTrek Session 9.9 29 MTrek Session C 29 Frameset XLDifference
Reach419465+46 mm
Stack616616±0 mm
Head tube angle62.6°62.6°±0.0°
Seat tube angle73.6°not listed
Effective top tube601633+32 mm
Chainstay length452452±0 mm
Wheelbase12471293+46 mm
BB drop1616±0 mm
BB height356356±0 mm
Standover742749+7 mm
Seat tube length425456+31 mm
Head tube length115115±0 mm

Differences are the Trek Session C 29 Frameset minus the Trek Session 9.9 29. Full charts: 2020 Trek Session 9.9 29, 2019 Trek Session C 29 Frameset.

Where each sits in its class

Trek Session 9.9 29Trek Session C 29 Frameset

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

Each bike is ranked against the other downhill bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.

What each ships with

The stock build of each bike's first listed trim. Parts that match are dimmed.

PartTrek Session 9.9 299.9 29Trek Session C 29 Frameset29 Frameset
FrameTrek OCLVTrek OCLV
ForkRockShox BoXXer Ultimatenot listed
ShifterSRAM X0 1 DHnot listed
DerailleurSRAM X01 DHnot listed
CassetteSRAM GX DHnot listed
ChainSRAM PC1110not listed
CranksetSRAM X01 DHnot listed
Bottom bracketSRAM DUBnot listed
PedalsWellgo MG-1not listed
WheelsetBontrager Line DH 30not listed
TireBontrager G5 Team Issuenot listed
BrakeSRAM Code RSCnot listed
HandlebarBontrager Linenot listed
StemBontrager Linenot listed
HeadsetFSA OrbitFSA Orbit
SeatpostBontrager Rhythm Elitenot listed
SaddleBontrager Arvadanot listed

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