2026 GT Sensor Comp vs 2027 Santa Cruz Tallboy
The XL is the Santa Cruz Tallboy size closest to your XL GT Sensor Comp. 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 Santa Cruz Tallboy
Compared with the GT Sensor Comp in XL, the Santa Cruz Tallboy in XL places the top of the head tube 4 mm higher and 15 mm further back, relative to the bottom bracket. Its wheelbase is 6 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +4 mm
- Higher front end
- Frame reach
- −15 mm
- Shorter frame reach
- Wheelbase
- −6 mm
- Shorter: quicker to change direction
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
GT Sensor Comp, XLSanta Cruz Tallboy, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | GT Sensor Comp XL | Santa Cruz Tallboy XL | Difference |
|---|---|---|---|
| Reach | 510 | 495 | −15 mm |
| Stack | 642 | 646 | +4 mm |
| Head tube angle | 65.5 | 65.1 | −0.4° |
| Seat tube angle | 77.5 | 77.5 | ±0.0° |
| Effective top tube | 646 | 637 | −9 mm |
| Chainstay length | 440 | 440 | ±0 mm |
| Wheelbase | 1273 | 1267 | −6 mm |
| BB drop | 35 | 36 | +1 mm |
| BB height | 345 | 338 | −7 mm |
| Standover | 755 | 742 | −13 mm |
| Seat tube length | 460 | 450 | −10 mm |
| Head tube length | 140 | 140 | ±0 mm |
Differences are the Santa Cruz Tallboy minus the GT Sensor Comp. Full charts: 2026 GT Sensor Comp, 2027 Santa Cruz Tallboy.
Where each sits in its class
GT Sensor CompSanta Cruz Tallboy
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 | GT Sensor CompComp | Santa Cruz Tallboy90 |
|---|---|---|
| Frame | GT Sensor | Santa Cruz Tallboy |
| Fork | Marzocchi Bomber Z2 | RockShox Pike Select |
| Rear shock | Fox DPS Performance | RockShox Deluxe Select+ |
| Shifter | SRAM SX Eagle | SRAM 90 Eagle Transmission |
| Derailleur | SRAM SX Eagle | SRAM 90 Eagle Transmission |
| Cassette | SRAM PG | SRAM GX Eagle Transmission |
| Chain | SRAM SX Eagle | SRAM GX Eagle Transmission |
| Crankset | TruVativ Descendant GX | SRAM 90 Eagle DUB Transmission |
| Bottom bracket | TruVativ Powerspline | SRAM DUB |
| Wheelset | WTB ST | not listed |
| Tire | Maxxis Minion DHF, Maxxis Dissector | Maxxis Forekaster |
| Brake | Tektro M745 | SRAM DB 8 |
| Rotor | Tektro M745 | SRAM HS2 |
| Handlebar | GT Alloy Riser | OneUp Components Aluminum Bar |
| Grips | GT Mushroom | Santa Cruz House |
| Headset | FSA 42 | Cane Creek 50 IS Integrated Headset |
| Seatpost | GT DropKick | not listed |
| Saddle | WTB Silverado | SDG Bel-Air V3 Lux-Alloy |
| Chainring | not listed | SRAM Eagle AXS |
| Hub | not listed | DT Swiss 370 |
| Rim | not listed | Reserve 30|TR AL |
| Stem | not listed | OneUp Components Enduro Stem |
| Dropper post | not listed | OneUp Components Dropper Post |
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