2025 Santa Cruz Megatower vs 2024 Transition Relay PNW Carbon
The XXL is the Transition Relay PNW Carbon size closest to your XXL Santa Cruz Megatower. 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 Transition Relay PNW Carbon
Compared with the Santa Cruz Megatower in XXL, the Transition Relay PNW Carbon in XXL places the top of the head tube 9 mm lower and 7 mm further forward, relative to the bottom bracket. Its wheelbase is 8 mm longer, which can contribute to stability at speed.
- Frame stack
- −9 mm
- Lower front end
- Frame reach
- +7 mm
- Longer frame reach
- Wheelbase
- +8 mm
- Longer: steadier at speed
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Santa Cruz Megatower, XXLTransition Relay PNW Carbon, XXLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Santa Cruz Megatower XXL | Transition Relay PNW Carbon XXL | Difference |
|---|---|---|---|
| Reach | 520 | 527 | +7 mm |
| Stack | 670 | 661 | −9 mm |
| Head tube angle | 63.8 | 63.4 | −0.4° |
| Seat tube angle | 77.8 | 76.3 | −1.5° |
| Effective top tube | not listed | 696 | |
| Chainstay length | 447 | 446 | −1 mm |
| Wheelbase | 1333 | 1341 | +8 mm |
| BB drop | 26.5 | 25 | −2 mm |
| BB height | 346 | 350 | +4 mm |
| Standover | 724 | not listed | |
| Seat tube length | 500 | 490 | −10 mm |
| Head tube length | 150 | 145 | −5 mm |
Differences are the Transition Relay PNW Carbon minus the Santa Cruz Megatower. Full charts: 2025 Santa Cruz Megatower, 2024 Transition Relay PNW Carbon.
Where each sits in its class
Santa Cruz MegatowerTransition Relay PNW Carbon
Each bike is ranked against its own type on Quiver (enduro and trail), 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 | Santa Cruz MegatowerGX AXS | Transition Relay PNW CarbonPNW Carbon Eagle 90 |
|---|---|---|
| Frame | Santa Cruz Megatower | Transition Relay |
| Fork | Fox 38 Performance Elite | RockShox Zeb Ultimate Charger 3 RC2 |
| Rear shock | Fox Float X Performance Elite | RockShox Vivid Coil Ultimate |
| Shifter | SRAM Pod Controller | SRAM Eagle 90 Transmission |
| Derailleur | SRAM GX Eagle AXS | SRAM Eagle 90 Transmission |
| Cassette | SRAM GX Eagle | SRAM 1275 |
| Chain | SRAM GX Eagle | SRAM Eagle |
| Crankset | SRAM GX Eagle | Race Face Aeffect ETOR |
| Chainring | SRAM GX Eagle | Transition Bash Spider |
| Bottom bracket | SRAM DUB | not listed |
| Tire | Maxxis Assegai, Maxxis Minion DHR II | Schwalbe Magic Mary, Schwalbe Big Betty |
| Hub | DT Swiss 370 | not listed |
| Rim | Reserve 30|SL AL 6069, Reserve 30|HD | not listed |
| Brake | SRAM Maven Bronze | SRAM Maven Silver Stealth |
| Rotor | SRAM HS2 | SRAM HS2 |
| Handlebar | Santa Cruz 35 | ANVL Mandrel 35 |
| Stem | Burgtec Enduro MK3 | ANVL Swage |
| Grips | Santa Cruz House | ODI Elite Flow |
| Headset | Cane Creek 40 | FSA 55R |
| Dropper post | OneUp Components V2 Dropper Post | not listed |
| Saddle | SDG Bel Air V3 | SDG Bel Air 3 LUX |
| Motor | not listed | Fazua Ride 60 |
| Battery | not listed | Fazua Energy 430 |
| Wheelset | not listed | DT Swiss E 1900 Spline 30 |
| Seatpost | not listed | OneUp Components Dropper |
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