2026 Marin Rift Zone vs 2026 GT Sensor ST Carbon Pro
The S is the GT Sensor ST Carbon Pro size closest to your M Marin Rift Zone. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the GT Sensor ST Carbon Pro
Compared with the Marin Rift Zone in M, the GT Sensor ST Carbon Pro in S places the top of the head tube 16 mm higher and 15 mm further back, relative to the bottom bracket.
- Frame stack
- +16 mm
- Higher front end
- Frame reach
- −15 mm
- Shorter frame reach
- Wheelbase
- +0 mm
- About the same
- Head angle
- −0.1°
- About the same head angle
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Marin Rift Zone is drawn. The GT Sensor ST Carbon Pro numbers we have for size S are missing the chainstay length.
Geometry side by side
| Measurement | Marin Rift Zone M | GT Sensor ST Carbon Pro S | Difference |
|---|---|---|---|
| Reach | 450 | 435 | −15 mm |
| Stack | 605.2 | 621 | +16 mm |
| Head tube angle | 65.5 | 65.4 | −0.1° |
| Seat tube angle | 77 | 77.4 | +0.4° |
| Effective top tube | 589.7 | 573 | −17 mm |
| Chainstay length | 430 | not listed | |
| Wheelbase | 1186.9 | 1187 | +0 mm |
| BB drop | not listed | not listed | |
| BB height | 339 | not listed | |
| Standover | not listed | 711 | |
| Seat tube length | 400 | 380 | −20 mm |
| Head tube length | 125 | not listed |
Differences are the GT Sensor ST Carbon Pro minus the Marin Rift Zone. Full charts: 2026 Marin Rift Zone, 2026 GT Sensor ST Carbon Pro.
Where each sits in its class
Marin Rift ZoneGT Sensor ST Carbon Pro
Each bike is ranked against the other trail 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 | Marin Rift Zone2 | GT Sensor ST Carbon ProST Carbon Pro |
|---|---|---|
| Frame | Marin Rift Zone | GT Sensor |
| Fork | Marzocchi Bomber Z2 | RockShox Pike Select+ |
| Rear shock | Marzocchi Bomber Air inline | RockShox Deluxe Select+ |
| Shifter | Shimano Deore | SRAM NX Eagle |
| Derailleur | Shimano Deore | SRAM GX AXS |
| Cassette | Shimano Deore M6100 | SRAM PG |
| Chain | KMC X-12 | SRAM NX Eagle |
| Crankset | Marin forged alloy, 30T narrow-wide, 165mm | TruVativ Stylo |
| Chainring | Marin 30T narrow-wide | not listed |
| Bottom bracket | External sealed cartridge | SRAM DUB BSA |
| Wheelset | Marin double-wall alloy, 29mm inner, 32-hole, tubeless-compatible | WTB KOM Trail |
| Tire | Maxxis Assegai | Maxxis Dissector, Maxxis Rekon |
| Brake | Tektro M5140 | SRAM G2 RSC |
| Rotor | Tektro 180mm front, 160mm rear | SRAM G2 |
| Handlebar | Marin mini-riser | GT Alloy Riser |
| Grips | Marin Grizzly | GT Mushroom |
| Dropper post | TranzX YSI60QL | not listed |
| Saddle | Marin Speed Concept | WTB Silverado |
| Headset | not listed | FSA 42 |
| Seatpost | not listed | GT DropKick |
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