2026 Transition Spire Carbon vs 2024 Santa Cruz Megatower
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Santa Cruz Megatower
- 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
- n/a
- One of the bikes has no number for this
- Head angle
- +1.3°
- Steeper: sharper steering
- Chainstays
- −10 mm
- Shorter: livelier
The two frames
Only the Transition Spire Carbon is drawn. The Santa Cruz Megatower numbers we have for size M are missing the reach, stack and wheelbase.
Geometry side by side
| Measurement | Transition Spire Carbon L | Santa Cruz Megatower M | Difference |
|---|---|---|---|
| Reach | 480 | not listed | |
| Stack | 633 | not listed | |
| Head tube angle | 62.5 | 63.8 | +1.3° |
| Seat tube angle | 77.6 | 77.42 | −0.2° |
| Effective top tube | 608 | 595 | −13 mm |
| Chainstay length | 448 | 438 | −10 mm |
| Wheelbase | 1289 | not listed | |
| BB drop | 32 | not listed | |
| BB height | 343 | 346 | +3 mm |
| Seat tube length | 430 | 405 | −25 mm |
| Head tube length | 110 | 100 | −10 mm |
Differences are the Santa Cruz Megatower minus the Transition Spire Carbon. Full charts: 2026 Transition Spire Carbon, 2024 Santa Cruz Megatower.
Where each sits in its class
Transition Spire CarbonSanta Cruz Megatower
AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted
Each bike is ranked against the other enduro 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 | Transition Spire CarbonCarbon Eagle 90 | Santa Cruz MegatowerGX AXS |
|---|---|---|
| Frame | Transition Spire | Santa Cruz Megatower |
| Fork | RockShox Zeb Ultimate Charger 3 RC2 | RockShox Zeb Select+ |
| Rear shock | RockShox Vivid Ultimate | RockShox Super Deluxe Select+ |
| Shifter | SRAM Eagle AXS | SRAM Pod Controller |
| Derailleur | SRAM Eagle 90 Transmission | SRAM GX Eagle AXS |
| Cassette | SRAM GX Eagle Transmission | SRAM GX Eagle |
| Chain | SRAM GX Eagle Transmission | SRAM GX Eagle Transmission |
| Crankset | SRAM Eagle 90 Transmission | SRAM GX Eagle DUB |
| Chainring | SRAM Eagle AXS | not listed |
| Wheelset | DT Swiss EX1700 SPLINE 30 | not listed |
| Tire | Schwalbe Magic Mary Radial, Schwalbe Albert Radial | Maxxis Assegai, Maxxis Minion DHR II |
| Brake | SRAM Maven Silver Stealth | SRAM Code Stealth Bronze |
| Rotor | SRAM CenterLine | SRAM HS2 |
| Handlebar | Burgtec Ride Wide Alloy Enduro | Santa Cruz 35 |
| Stem | Burgtec Enduro MK3 35 | Burgtec Enduro MK3 |
| Grips | ODI Longneck V2.1 | Santa Cruz House |
| Headset | FSA NO.55R/57 | Cane Creek 40 |
| Dropper post | OneUp Components dropper post | OneUp Components V2 Dropper Post |
| Saddle | SDG Bel Air 3 | WTB Silverado |
| Bottom bracket | not listed | SRAM DUB |
| Hub | not listed | DT Swiss 370, DT Swiss Swis 370 |
| Rim | not listed | Race Face AR |
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