2025 Mondraker Summum RR Mullet 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
- +21 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
Only the Mondraker Summum RR Mullet 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 RR Mullet S | Trek Session R2 | Difference |
|---|---|---|---|
| Reach | 430 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 | 576 mm | 618 | +42 mm |
| Chainstay length | 450 mm | 445 | −5 mm |
| Wheelbase | 1256 mm | 1277 | +21 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 RR Mullet. Full charts: 2025 Mondraker Summum RR Mullet, 2025 Trek Session.
Where each sits in its class
Mondraker Summum RR MulletTrek 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 MulletRR Mullet | Trek Session8 |
|---|---|---|
| Fork | Fox FLOAT | RockShox BoXXer |
| Rear shock | Fox DHX2 Kashima Factory | Marzocchi Bomber |
| Shifter | Shimano XT M820 Saint | not listed |
| Derailleur | e*thirteen Vario, Shimano Saint RD-M820-SS | not listed |
| Cassette | Shimano CS-HG500-10 | SRAM GX DH |
| Chain | Shimano HG95 | SRAM PC 1110 |
| Crankset | Shimano XT M825 Saint | TruVativ Descendant GX |
| Tire | Maxxis Assegai 29” x 2.5” WT, Maxxis Dissector 27''5x2.4 WT | Bontrager G5 Team Issue, Bontrager G5 |
| Hub | e*thirteen Boost, e*thirteen Superboost | not listed |
| Rim | e*thirteen Grappler | not listed |
| Brake | Shimano XT M820 Saint | SRAM Code RSC |
| Handlebar | Onoff S6 1.0 7050 alloy | Bontrager Line |
| Stem | Onoff S9 DH CNC Integrated | Bontrager Line |
| Grips | Ergon GDH Team | not listed |
| Headset | Onoff ZS56/ZS56 | not listed |
| Seatpost | Onoff S3 DH Alloy | Bontrager Rhythm Elite |
| Saddle | Ergon SM10 DH | 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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