Velopedia Bicycle Archive
2025 Santa Cruz Megatower X0 AXS RSV
Mountain bicycle from the Velopedia specification archive.
- Original MSRP
- $9,749.00
- Sizes
- S, M, L, XL, XXL
- Colors
- Gloss Crimson, Matte Black
- Weight
- 34.92 lbs / 15.84 kg
- Geometry
- 5 manufacturer sizes · Ride analysis
- Archive ID
- 900000393
Current market
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Velopedia analysis
What the specifications mean
Suspension at both ends means fork and shock setup should be considered together; mismatched sag or rebound can leave the front and rear reacting very differently. Electronic shifting removes the usual shift cable but adds a separate battery and controls, while the 520% cassette range describes how much gearing is available. Carbon construction changes the inspection emphasis from metal-style dents and corrosion to impact damage, ripples and overtightened clamp areas.
Suspension setup
Front + rear
Fork and shock pressure, sag and rebound should be balanced and recorded independently.
Drivetrain
Electronic · 520% range
Shift-system battery state joins derailleur setup and sprocket compatibility as a troubleshooting variable.
Frame material
Carbon / composite
Look for impact damage and clamp marks rather than metal-style dents or rust.
Wheel standard
29 in · 622 mm
Rim width and frame or fork clearance remain important beyond nominal diameter.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- SuspensionAsk when the fork and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for play.Evaluate the suspension →
- DrivetrainConfirm every shift-system battery charges, every shift control works and the derailleur moves cleanly across the cassette. Make sure the matching shift-system charger is included, then measure chain wear and inspect the cassette teeth.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2025 Santa Cruz Megatower X0 AXS RSV · Mountain · Published sizes: S, M, L, XL, XXL
Frame and fork
Inspect the frame and fork →Archived: Frame: Carbon CC Frame · Fork: FOX 38 Float Factory Elite, Grip X2, 170mm -or- RockShox Zeb Ultimate, 170mm
Suspension
Evaluate the suspension →Archived: Fork: FOX 38 Float Factory Elite, Grip X2, 170mm -or- RockShox Zeb Ultimate, 170mm · Rear shock: Fox Float X2 Factory, 230x65
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM AXS Pod Controller Rocker Paddle · Rear derailleur: SRAM X0 Eagle AXS T-Type, 12spd · Crankset: SRAM X0 Eagle DUB T-Type Crankset, 32t · Bottom bracket: SRAM DUB 73mm MTB Wide BB · Cassette: SRAM X0 Eagle T-Type, 10-52t · Chain: SRAM X0 Eagle T-Type, Flattop, 12spd
Brakes
Inspect the brakes →Archived: Brakes: SRAM Maven Silver Stealth
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29 · Rims: (F) Reserve 30|HD Carbon / (R) Reserve 30|HD Carbon · Hubs: (F) Industry Nine 1/1, 15x110, 6-Bolt, 28h / (R) Industry Nine 1/1, 12x148, XD, 6-Bolt, 28h · Front tire: Maxxis Assegai 29"x2.5", 3C MaxxGrip, EXO+ · Rear tire: Maxxis Minion DHR II 29x2.4" 3C MaxxTerra, Double Down
Controls and contact points
Archived: Headset: Cane Creek 40 IS Integrated Headset · Handlebar: Santa Cruz 35 Carbon Bar, 800mm · Stem: Burgtec Enduro MK3, 42mm · Seatpost: OneUp Dropper Post, 31.6 · Saddle: WTB Silverado Medium Fusion, CroMo SL
Before and during the test ride
Follow the full used-bike inspection order →Interpretation based on the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Frameset
| Frame Construction | Carbon CC Frame |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | FOX 38 Float Factory Elite, Grip X2, 170mm -or- RockShox Zeb Ultimate, 170mm |
| Rear Shock | Fox Float X2 Factory, 230x65 |
Drivetrain
| Shifters | SRAM AXS Pod Controller Rocker Paddle |
|---|---|
| Rear Derailleur | SRAM X0 Eagle AXS T-Type, 12spd |
| Crankset | SRAM X0 Eagle DUB T-Type Crankset, 32t |
| Bottom Bracket | SRAM DUB 73mm MTB Wide BB |
| Cassette | SRAM X0 Eagle T-Type, 10-52t |
| Chain | SRAM X0 Eagle T-Type, Flattop, 12spd |
Brakes
| Brakes | SRAM Maven Silver Stealth |
|---|
Cockpit & Contact Points
| Headset | Cane Creek 40 IS Integrated Headset |
|---|---|
| Handlebar | Santa Cruz 35 Carbon Bar, 800mm |
| Stem | Burgtec Enduro MK3, 42mm |
| Saddle | WTB Silverado Medium Fusion, CroMo SL |
| Seatpost | OneUp Dropper Post, 31.6 |
Wheels & Tires
| Hubs | (F) Industry Nine 1/1, 15x110, 6-Bolt, 28h / (R) Industry Nine 1/1, 12x148, XD, 6-Bolt, 28h |
|---|---|
| Rims | (F) Reserve 30|HD Carbon / (R) Reserve 30|HD Carbon |
| Front Tire | Maxxis Assegai 29"x2.5", 3C MaxxGrip, EXO+ |
| Rear Tire | Maxxis Minion DHR II 29x2.4" 3C MaxxTerra, Double Down |
| Wheel Size | 29 |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | S | M | L | XL | XXL |
|---|---|---|---|---|---|
| Seat tube | 380 mm | 405 mm | 430 mm | 460 mm | 500 mm |
| Top tube | 570 mm | 594/595 | 613 mm | 637/638 | 666/667 |
| Head tube | 90 mm | 100 mm | 115 mm | 135 mm | 150 mm |
| Head-tube angle | 63.8°/63.5° | 63.8°/63.5° | 63.8°/63.5° | 63.8°/63.5° | 63.8°/63.5° |
| Seat-tube angle | 77.24°/77.0° | 77.42°/77.2° | 77.8°/77.5° | 77.8°/77.5° | 77.8°/77.5° |
| Chainstay / rear center | 436/437 | 437/438 | 440/441 | 443/444 | 447/448 |
| Wheelbase | 1206 mm | 1236/1237 | 1266 mm | 1298 mm | 1333/1334 |
| Bottom-bracket drop | 26.5/30 | 26.5/30 | 26.5/30 | 26.5/30 | 26.5/30 |
| Bottom-bracket height | 346/342.5 | 346/342.5 | 346/342.5 | 346/342.5 | 346/342.5 |
| Reach | 430/427 | 455/452 | 475/472 | 495/492 | 520/517 |
| Stack | 616/618 | 625/627 | 638/640 | 656/658 | 670/672 |
| Standover height | 709/705 | 716/712 | 723/718 | 722/717 | 724/720 |
| Front center | 770 mm | 799 mm | 826 mm | 855 mm | 886 mm |
Geometry source: Manufacturer HTML geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry interpretation
What this geometry means
The archived table contains paired manufacturer values. Velopedia separates the numerically higher and lower chassis states for interpretation without treating them as separate bicycles.
S geometry
Configuration
Riding position
The 616 mm stack is tall relative to the 430 mm reach, pointing to a more upright front-end position rather than an especially long, low cockpit. Its 77.2° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.8° head angle combined with a 1206 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Lower geometry, this configuration raises the bottom bracket by 3.5 mm, reduces bottom-bracket drop by 3.5 mm, steepens the head angle by 0.3°, and extends reach by 3 mm.
Archive context
The head angle of 63.8° sits toward the slacker end. Its bottom-bracket drop of 26.5 mm sits somewhat shallower than typical. The seat angle of 77.2° sits somewhat steeper than typical.
Riding position
The 618 mm stack is tall relative to the 427 mm reach, pointing to a more upright front-end position rather than an especially long, low cockpit. Its 77° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.5° head angle combined with a 1206 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Higher geometry, this configuration lowers the bottom bracket by 3.5 mm, increases bottom-bracket drop by 3.5 mm, slackens the head angle by 0.3°, and shortens reach by 3 mm.
Archive context
The head angle of 63.5° sits toward the slacker end. The chainstay of 437 mm sits somewhat longer than typical. Its wheelbase of 1206 mm sits somewhat longer than typical.
M geometry
Configuration
Riding position
A 455 mm reach paired with 625 mm of stack gives this size a moderate frame proportion: roomy enough when standing without pushing strongly toward either a very low or very upright front end. Its 77.4° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.8° head angle combined with a 1236 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Lower geometry, this configuration raises the bottom bracket by 3.5 mm, reduces bottom-bracket drop by 3.5 mm, steepens the head angle by 0.3°, and extends reach by 3 mm.
Archive context
The seat angle of 77.4° sits toward the steeper end. Its bottom-bracket drop of 26.5 mm sits toward the shallower-drop end. The head angle of 63.8° sits somewhat slacker than typical.
Riding position
A 452 mm reach paired with 627 mm of stack gives this size a moderate frame proportion: roomy enough when standing without pushing strongly toward either a very low or very upright front end. Its 77.2° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.5° head angle combined with a 1237 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Higher geometry, this configuration lowers the bottom bracket by 3.5 mm, increases bottom-bracket drop by 3.5 mm, slackens the head angle by 0.3°, and shortens reach by 3 mm.
Archive context
The head angle of 63.5° sits toward the slacker end. The seat angle of 77.2° sits somewhat steeper than typical. Its wheelbase of 1237 mm sits somewhat longer than typical.
L geometry
Configuration
Riding position
A 475 mm reach paired with 638 mm of stack gives this size a moderate frame proportion: roomy enough when standing without pushing strongly toward either a very low or very upright front end. Its 77.8° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.8° head angle combined with a 1266 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Lower geometry, this configuration raises the bottom bracket by 3.5 mm, reduces bottom-bracket drop by 3.5 mm, steepens the head angle by 0.3°, and extends reach by 3 mm.
Archive context
The seat angle of 77.8° sits toward the steeper end. Its bottom-bracket drop of 26.5 mm sits somewhat shallower than typical. The head angle of 63.8° sits somewhat slacker than typical.
Riding position
A 472 mm reach paired with 640 mm of stack gives this size a moderate frame proportion: roomy enough when standing without pushing strongly toward either a very low or very upright front end. Its 77.5° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.5° head angle combined with a 1266 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Higher geometry, this configuration lowers the bottom bracket by 3.5 mm, increases bottom-bracket drop by 3.5 mm, slackens the head angle by 0.3°, and shortens reach by 3 mm.
Archive context
The seat angle of 77.5° sits toward the steeper end. The head angle of 63.5° sits toward the slacker end. The chainstay of 441 mm sits somewhat longer than typical.
XL geometry
Configuration
Riding position
A 495 mm reach paired with 656 mm of stack gives this size a moderate frame proportion: roomy enough when standing without pushing strongly toward either a very low or very upright front end. Its 77.8° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.8° head angle combined with a 1298 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Lower geometry, this configuration raises the bottom bracket by 3.5 mm, reduces bottom-bracket drop by 3.5 mm, steepens the head angle by 0.3°, and extends reach by 3 mm.
Archive context
The seat angle of 77.8° sits toward the steeper end. Its bottom-bracket drop of 26.5 mm sits toward the shallower-drop end. Its stack of 656 mm sits toward the taller end.
Riding position
A 492 mm reach paired with 658 mm of stack gives this size a moderate frame proportion: roomy enough when standing without pushing strongly toward either a very low or very upright front end. Its 77.5° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.5° head angle combined with a 1298 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Higher geometry, this configuration lowers the bottom bracket by 3.5 mm, increases bottom-bracket drop by 3.5 mm, slackens the head angle by 0.3°, and shortens reach by 3 mm.
Archive context
Its reach of 492 mm sits toward the shorter end. Its stack of 658 mm sits toward the taller end. The head angle of 63.5° sits toward the slacker end.
XXL geometry
Configuration
Riding position
With 520 mm of reach and 670 mm of stack, the frame has a relatively long, low proportion that should leave plenty of room when standing and put the front end toward the lower side of modern mountain-bike fit. Its 77.8° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.8° head angle combined with a 1333 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Lower geometry, this configuration raises the bottom bracket by 3.5 mm, reduces bottom-bracket drop by 3.5 mm, steepens the head angle by 0.3°, and extends reach by 3 mm.
Archive context
Its bottom-bracket drop of 26.5 mm sits toward the shallower-drop end. Its wheelbase of 1333 mm sits toward the longer end. The head angle of 63.8° sits toward the slacker end.
Riding position
With 517 mm of reach and 672 mm of stack, the frame has a relatively long, low proportion that should leave plenty of room when standing and put the front end toward the lower side of modern mountain-bike fit. Its 77.5° effective seat angle places the seated rider relatively forward, a layout that generally helps keep body weight centered on steep climbs.
Handling tendencies
A 63.5° head angle combined with a 1334 mm wheelbase points to strongly stability-oriented steering and chassis behavior. The longer the chassis and slacker the front end, the more the bike tends to favor composure over very quick direction changes.
Configuration changes
Compared with Higher geometry, this configuration lowers the bottom bracket by 3.5 mm, increases bottom-bracket drop by 3.5 mm, slackens the head angle by 0.3°, and shortens reach by 3 mm.
Archive context
Its stack of 672 mm sits toward the taller end. Its wheelbase of 1334 mm sits toward the longer end. The head angle of 63.5° sits toward the slacker end.
Geometry describes frame proportions and likely tendencies, not a ride test. Rider proportions, cockpit setup, tires, suspension settings, wheel configuration, and component choices can materially change how a bicycle fits and feels.
Gallery
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.