Megatower GX AXS
Build Kit & Specs
*Please note: we make every effort to ensure accuracy of spec information, but they are subject to change.
| Frame | |
|---|---|
| Material | |
| Features | |
| Frame | |
| Travel | |
| Weight | |
| Wheel Size | |
| Suspension | |
| Fork | |
| Shock | |
| Remote | |
| Drivetrain | |
| Bottom Bracket | |
| Cassette | |
| Chain | |
| Chainguide | |
| Crank Length | |
| Crankset | |
| Front Derailleur | |
| Left Shifter | |
| Rear Derailleur | |
| Right Shifter | |
| Shifters | |
| Brakes | |
| Brakes | |
| Front Brakes | |
| Front Rotor | |
| Rear Brakes | |
| Rear Rotor | |
| Rotors | |
| Cockpit | |
| Bar Width | |
| Dropper Length | |
| Grips / Bar Tape | |
| Handlebars | |
| Headset | |
| Saddle | |
| Seatpost | |
| Stem | |
| Stem Length | |
| Wheels | |
| Front Rim | |
| Front Hub | |
| Front Tire | |
| Rear Rim | |
| Rear Hub | |
| Rear Tire | |
| Valves | |
| Rims | |
| Ebike | |
| Battery | |
| Drive Unit | |
| Battery Charger | |
| Specs | |
| Bottom Bracket Shell | |
| Rear Brake Mount | |
| Chainguide_standard | |
| Chainline | |
| Derailleur Hanger | |
| Shock Length | |
| Fork Axle to Crown | |
| Fork Compatibility | |
| Fork Offset | |
| Front Derailleur Mount | |
| Headset | |
| Max Chainring Size | |
| Max Rotor Size | |
| Max Tire Clearance | |
| Rear Spacing | |
| Rear Travel | |
| Recommended Sag | |
| Sealant | |
| Seat Clamp Diameter | |
| Seat Post Diameter | |
| Shock Bushing Size Front | |
| Shock Bushing Size Rear | |
| Shock Mounting Hardware Lower | |
| Shock Mounting Hardware Upper | |
| Shock Stroke | |
| Suspension System | |
| UDH Compatible | |
| Water Bottle Mounts |
Megatower GX AXS
Sizing & Geometry
Find your Size
If you're on the cusp between the recommended height range of two sizes, the absolute best thing is to try to ride them both. At a minimum, check the stack/reach measurements on your current bike and compare it to the new model you are looking at to get an idea of a fit you are already comfortable with. If riding the bike is not an option, consider the following.
A larger size frame will be more stable, and will give you more room to move without upsetting the weight-balance of the bike. The larger size will put the front wheel further in front of you, which gives the feeling of security and conversely, it will require more significant body movements when you WANT to shift the weight-bias of the bike. Think hard about your riding style and how active/intuitive you want it to be vs stable and speedy. You'll need to work a bit harder to muscle the larger bike around.
Not all bodies at a given height are the same. If you have longer legs and a shorter torso than the average person your height, that may push you towards the smaller of the recommended sizes. If you're all torso and arms, most likely you'll want to size up.
Small
Medium
Large
X-Large
XX-Large
154cm
5'1"
-
165cm
5'5"
Reach: 430mm
165cm
5'5"
-
175cm
5'9"
Reach: 455mm
175cm
5'9"
-
185cm
6'1"
Reach: 475mm
185cm
6'1"
-
193cm
6'4"
Reach: 495mm
193cm
6'4"
-
200cm
6'7"
Reach: 520mm
All units are in millimeters or degrees.
| s | m | l | xl | xxl | |
|---|---|---|---|---|---|
| Reach (Hi/Lo) | 430/427 | 455/452 | 475/472 | 495/492 | 520/517 |
| Stack (Hi/Lo) | 616/618 | 625/627 | 638/640 | 656/658 | 670/672 |
| Head Tube Angle (Hi/Lo) | 63.8°/63.5° | 63.8°/63.5° | 63.8°/63.5° | 63.8°/63.5° | 63.8°/63.5° |
| Seat Tube Length (Hi/Lo) | 380 | 405 | 430 | 460 | 500 |
| Front Center (Hi/Lo) | 770 | 799 | 826 | 855 | 886 |
| BB Height (Hi/Lo) | 346/342.5 | 346/342.5 | 346/342.5 | 346/342.5 | 346/342.5 |
| BB Drop (Hi/Lo) | 26.5/30 | 26.5/30 | 26.5/30 | 26.5/30 | 26.5/30 |
| Wheelbase (Hi/Lo) | 1206 | 1236/1237 | 1266 | 1298 | 1333/1334 |
| Rear Center (Hi/Lo) | 436/437 | 437/438 | 440/441 | 443/444 | 447/448 |
| Head Tube Length (Hi/Lo) | 90 | 100 | 115 | 135 | 150 |
| Top Tube Length (Hi/Lo) | 570 | 594/595 | 613 | 637/638 | 666/667 |
| Seat Tube Angle (Hi/Lo) | 77.24°/77.0° | 77.42°/77.2° | 77.8°/77.5° | 77.8°/77.5° | 77.8°/77.5° |
| Standover Height (Hi/Lo) | 709/705 | 716/712 | 723/718 | 722/717 | 724/720 |
Megatower GX AXS
Setup & Support
Whether you’re the proud owner of a Megatower or are just digging deep into the details you’ll find it all here.
(2025) Fox Float X2 Factory
| Rider Weight (lbs) | Rider Weight (kgs) | Pressure (psi) | Sag | Rebound (L/H from closed) | Compression (L/H from closed) |
|---|---|---|---|---|---|
| 100 | 45 | 140 | 29-32%, 19-21mm | 11,7 | 12,8 |
| 120 | 54 | 160 | 29-32%, 19-21mm | 10,6 | 12,8 |
| 140 | 64 | 175 | 29-32%, 19-21mm | 10,6 | 12,8 |
| 160 | 73 | 195 | 29-32%, 19-21mm | 9,5 | 12,8 |
| 180 | 82 | 210 | 29-32%, 19-21mm | 9,5 | 12,8 |
| 200 | 91 | 230 | 29-32%, 19-21mm | 9,4 | 12,8 |
| 220 | 100 | 250 | 29-32%, 19-21mm | 9,4 | 12,8 |
| 240 | 109 | 270 | 29-32%, 19-21mm | 8,4 | 12,8 |
| 260 | 118 | 290 | 29-32%, 19-21mm | 8,3 | 12,8 |
(2025) Fox 38 Factory
| Rider Weight (lbs) | Rider Weight (kgs) | Pressure (psi) | Rebound (L/H from closed) | Compression (L/H from closed) |
|---|---|---|---|---|
| 120 | 54 | 72 | 9/8 | 5/5 |
| 130 | 59 | 76 | 8/7 | 5/5 |
| 140 | 64 | 80 | 7/7 | 5/5 |
| 150 | 68 | 84 | 7/6 | 5/5 |
| 160 | 73 | 89 | 7/6 | 5/5 |
| 170 | 77 | 93 | 7/5 | 5/5 |
| 180 | 82 | 97 | 6/4 | 5/5 |
| 190 | 86 | 102 | 5/4 | 5/5 |
| 200 | 91 | 106 | 4/3 | 5/5 |
| 210 | 95 | 110 | 3/2 | 5/5 |
| 220 | 100 | 114 | 3/1 | 5/5 |
| 230 | 104 | 119 | 2/0 | 5/5 |
| 240 | 109 | 123 | 1/0 | 5/5 |
(2024) Rockshox Zeb Ultimate 170
| Rider Weight (lbs) | Rider Weight (kgs) | Pressure (psi) | Rebound (from closed) | Compression (L/H from middle) |
|---|---|---|---|---|
| 100 | 45 | 29 | 15 | -2,middle |
| 120 | 54 | 37 | 13 | -2,middle |
| 140 | 64 | 45 | 12 | -2,middle |
| 160 | 73 | 54 | 11 | -2,middle |
| 180 | 82 | 62 | 10 | -2,middle |
| 200 | 91 | 70 | 9 | -2,middle |
| 220 | 100 | 78 | 8 | -2,middle |
| 240 | 109 | 86 | 6 | -2,middle |
(2024) Fox Float X2 Factory
| Rider Weight (lbs) | Rider Weight (kgs) | Pressure (psi) | Sag | Rebound (L/H from closed) | Compression (L/H from closed) |
|---|---|---|---|---|---|
| 100 | 45 | 140 | 29-32%, 18-20mm | 11,7 | 13,7 |
| 120 | 54 | 160 | 29-32%, 18-20mm | 10,6 | 13,7 |
| 140 | 64 | 175 | 29-32%, 18-20mm | 10,6 | 13,7 |
| 160 | 73 | 195 | 29-32%, 18-20mm | 9,5 | 13,7 |
| 180 | 82 | 210 | 29-32%, 18-20mm | 9,5 | 13,7 |
| 200 | 91 | 230 | 29-32%, 18-20mm | 9,4 | 13,7 |
| 220 | 100 | 250 | 29-32%, 18-20mm | 8,4 | 13,7 |
| 240 | 109 | 270 | 29-32%, 18-20mm | 8,4 | 13,7 |
(2024) Rockshox Super Deluxe Ultimate Coil
| Rider Weight (lbs) | Rider Weight (kgs) | Spring Rate | Sag | Preload | Rebound (from closed) | Compression (L/H from middle) |
|---|---|---|---|---|---|---|
| 100 | 45 | 250 | 29-32%, 18-20mm | 1-2 turns | 9 | -2, middle |
| 120 | 54 | 300 | 29-32%, 18-20mm | 1-2 turns | 9 | -2, middle |
| 140 | 64 | 350 | 29-32%, 18-20mm | 1-2 turns | 8 | -2, middle |
| 160 | 73 | 400 | 29-32%, 18-20mm | 1-2 turns | 8 | -2, middle |
| 180 | 82 | 450 | 29-32%, 18-20mm | 1-2 turns | 7 | -2, middle |
| 200 | 91 | 500 | 29-32%, 18-20mm | 1-2 turns | 6 | -2, middle |
| 220 | 100 | 550 | 29-32%, 18-20mm | 1-2 turns | 6 | -2, middle |
| 240 | 109 | 600 | 29-32%, 18-20mm | 1-2 turns | 5 | -2, middle |
Seatpost Collar, Downtube Protector, Glovebox, and Shuttle Guard
| label | part_number | quantity | name | blurb | torque |
|---|---|---|---|---|---|
| A | 67-19217 | 1 | Head Tube Badge | Clean frame surface, center on headtube | |
| B | 30-22560 | 1 | Shuttle Guard | ||
| C | 30-23750 | 1 | Shuttle Guard Mount | ||
| D | 26-21249 | 2 | M4x8 BHCS | Apply grease to threads | 0.65 Nm |
| E | 30-23718 | 1 | Downtube Protector | ||
| F | 26-18382 | 2 | M4x12 BHC | Apply grease to treads | 0.65 Nm |
| G | 30-23225 | 2 | Glovebox nut | ||
| H | 26-25333 | 1 | Glovebox bezel | ||
| I | 26-23284 | 4 | M3x8 BHCS | Apply Loctite 242 to threads | 0.5 Nm |
| J | 26-22843 | 1 | Glovebox lid | ||
| K | 26-22358 | 1 | M3x6 | Apply Loctite 242 to threads | 0.6 Nm |
Loading
Upper Link and Lower Link Hardware
| label | part_number | quantity | torque | name | blurb |
|---|---|---|---|---|---|
| A | 26-20122 | 2 | 16 Nm | M10x23 Screw | Apply Loctite 242 to threads only, apply grease to shaft only |
| B | 26-22461 | 2 | 20 Nm | M8x45 Shock Bolt | Apply Loctite 242 to threads |
| C | 08-22343 | 1 | 20 Nm | Pivot Axle M15x91 | Apply Loctite 242 to threads only, apply grease to shaft only |
| D | 08-16291 | 1 | 20 Nm | Pivot axle M15x68.5 | Apply Loctite 242 to threads only, apply grease to shaft only |
| E | 08-16292 | 1 | 20 Nm | Pivot axle M15x80.5 | Apply Loctite 242 to threads only, apply grease to shaft only |
| F | 26-15633 | 3 | M6 Tapered Washer | Apply grease to surface | |
| G | 26-11817 | 3 | M6 Washer | ||
| H | 26-15947 | 3 | 9 Nm | M6x20 SHCS | Apply Loctite 242 to threads |
| I | 26-21452 | 1 | M8x2 Flip Chip NDS | Apply grease to surface | |
| J | 26-21451 | 1 | M8x2 Flip Chip DS | Apply grease to surface |
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Rear Axle, Derailleur Hanger and Chainstay Protector
| label | part_number | quantity | name | blurb | torque |
|---|---|---|---|---|---|
| A | 08-22209 | 1 | Rear axle 12x173.7 | Apply grease to shaft and threads | |
| B | 23-23491 | 1 | SCB UDH | Interchangeable with Sram UDH | |
| C | 26-23492 | 1 | SCB UDH screw | Reverse thread | 20 Nm |
| D | 30-20361 | 1 | Chainstay Protector | ||
| E | 26-15939 | 1 | M3x12 BHCS | Apply grease to treads | 0.5 Nm |
| F | 26-18382 | 2 | M4x12 BHC | Apply grease to treads | 0.65 Nm |
| G | 49-21567 | 1 | Lower Link Fender | ||
| H | 30-21453 | 1 | Seatstay Protector |
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Upper Link
| label | part_number | quantity | name | blurb |
|---|---|---|---|---|
| A | 29-23753 | 1 | Upper Link | |
| B | 11-12681 | 2 | 6900-2RS Bearing | |
| C | 26-15533 | 2 | M10x3 Washer | Apply grease to inner surface |
| D | 11-12218 | 2 | 6902-2RS Max Bearing | |
| E | 26-11612 | 2 | Bearing Dust Shield | Apply grease to inner surface |
| F | 26-17013 | 1 | 15x40.25 Bearing Spacer |
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Lower Link
| label | part_number | quantity | name | blurb | torque |
|---|---|---|---|---|---|
| A | 29-23752 | 1 | Lower Link | ||
| B | 11-17708 | 4 | 6902-1ZR Bearing | ||
| C | 26-11612 | 4 | Bearing Dust Shield | Apply grease to inner surface | |
| D | 26-19126 | 1 | 15x28 Bearing spacer | ||
| E | 26-17013 | 1 | 15x40.25 Bearing Spacer | ||
| F | 26-15532 | 1 | M5x5 Set Screw | Apply Loctite 242 to threads, titghten until flush | |
| G | 26-12678 | 1 | M6 Grease Fitting | 9 Nm |
Loading
| Frame Size | Flip Chip | Setup Key | Setup Cog | 30T | 32T | 34T | 36T |
|---|---|---|---|---|---|---|---|
| Small | High | B | 7 | 116 | 116 | 118 | 118 |
| Medium | High | B | 7 | 116 | 116 | 118 | 118 |
| Large | High | B | 7 | 116 | 116 | 118 | 118 |
| XLarge | High | B | 7 | 116 | 118 | 118 | 120 |
| XXLarge | High | B | 7 | 118 | 118 | 120 | 120 |
| Small | Low | B | 7 | 116 | 116 | 118 | 118 |
| Medium | Low | B | 7 | 116 | 116 | 118 | 118 |
| Large | Low | B | 7 | 116 | 118 | 118 | 120 |
| XLarge | Low | B | 7 | 116 | 118 | 118 | 120 |
| XXLarge | Low | B | 7 | 118 | 118 | 120 | 120 |
If you're looking for more information about your bike check our the Santa Cruz Bicycles Owner's Manual.
Megatower GX AXS
See dealer for pricing
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Learn MoreWe build Santa Cruz bicycles to be durable and long lasting, and then back them up with legendary support and a warranty of the highest standard.
Santa Cruz Bicycles offers free replacement pivot bearings to the original owner for as long as they own their bike.
Carbon
C
Front (MM)
170
Rear (MM)
165
Wheel Size
29
35.08
15.91
Weight (lbs)
35.08
Weight (kg)
15.91
Seriously. The Megatower’s big wheels, long-travel and tough carbon fiber chassis delivers the high-speed security traits of a race bike. Yet the relatively steep seat angle and size-specific geo maintain the Mega’s mega pedaling ability, elevating its reputation as the perfect choice for big gravity rides, park laps and enduro racing.
Standout Features
Explore the highlights...
01
C Carbon Frame
02
VPP™ Suspension
03
Flip Chip
04
Glovebox
Dig Deep
Specs, sizing and support for the Megatower GX AXS
Build kit& Specs
Geometry& Sizing
