2024 Mondraker Summum R vs 2025 Trek Session
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Trek Session
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- n/a
- One of the bikes has no number for this
- Wheelbase
- +7 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
Only the Mondraker Summum R is drawn. The Trek Session numbers we have for size R2 are missing the reach, stack and seat angle.
Geometry side by side
| Measurement | Mondraker Summum R M | Trek Session R2 | Difference |
|---|---|---|---|
| Reach | 450 mm | not listed | |
| Stack | 632 mm | not listed | |
| Head tube angle | 63.5° | 63 | −0.5° |
| Seat tube angle | 77° | not listed | |
| Effective top tube | 593 mm | 618 | +25 mm |
| Chainstay length | 450 mm | 445 | −5 mm |
| Wheelbase | 1270 mm | 1277 | +7 mm |
| BB height | 350 mm | not listed | |
| Seat tube length | 400 mm | not listed | |
| Head tube length | 112 mm | not listed | |
| Standover | not listed | 751 |
Differences are the Trek Session minus the Mondraker Summum R. Full charts: 2024 Mondraker Summum R, 2025 Trek Session.
Where each sits in its class
Mondraker Summum RTrek Session
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.
| Part | Mondraker Summum RR | Trek Session8 |
|---|---|---|
| Fork | Fox FLOAT | RockShox BoXXer |
| Rear shock | Fox DHX2 Performance elite | Marzocchi Bomber |
| Shifter | SRAM GX DH | not listed |
| Derailleur | e*thirteen Vario, SRAM GX DH | not listed |
| Cassette | SRAM GX DH | SRAM GX DH |
| Chain | SRAM PC1110 | SRAM PC 1110 |
| Crankset | SRAM Truvativ Descendant DH | TruVativ Descendant GX |
| Bottom bracket | SRAM DUB | not listed |
| Tire | Michelin DH34 | Bontrager G5 Team Issue, Bontrager G5 |
| Hub | e*thirteen Boost, e*thirteen Superboost | not listed |
| Rim | e*thirteen LG1 Plus DH | not listed |
| Brake | SRAM Code Stealth Bronze | SRAM Code RSC |
| Handlebar | Onoff Sulfur 1.0 double butted 6061 alloy | Bontrager Line |
| Stem | Onoff Krypton DH CNC Integrated FG | Bontrager Line |
| Grips | Onoff Desert | not listed |
| Headset | Onoff Mercurium 1.5 ZS for 1-1/8” steerer tube | not listed |
| Seatpost | SDG I-Beam SP-751 | Bontrager Rhythm Elite |
| Saddle | SDG I-Fly 2.0 I-Beam | Bontrager Arvada |
| Frame | not listed | Trek Session 8 |
| Chainring | not listed | TruVativ 34 |
| Pedals | not listed | Wellgo BO-87B |
| Wheelset | not listed | Bontrager Line DH 30 |
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