2021 Rocky Mountain Altitude Alloy vs 2021 Santa Cruz Megatower Coil
The L is the Santa Cruz Megatower Coil size closest to your 27.5 S Rocky Mountain Altitude Alloy. 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 Megatower Coil
Compared with the Rocky Mountain Altitude Alloy in 27.5 S, the Santa Cruz Megatower Coil in L places the top of the head tube 27 mm higher and 39 mm further forward, relative to the bottom bracket.
- Frame stack
- +27 mm
- Higher front end
- Frame reach
- +39 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −0.1°
- About the same head angle
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The Rocky Mountain Altitude Alloy numbers we have for size 27.5 S are missing the chainstay length. The numbers below still compare.
Geometry side by side
| Measurement | Rocky Mountain Altitude Alloy 27.5 S | Santa Cruz Megatower Coil L | Difference |
|---|---|---|---|
| Reach | 428 | 467 | +39 mm |
| Stack | 598 | 625 | +27 mm |
| Head tube angle | 64.8 | 64.7 | −0.1° |
| Seat tube angle | 75.8 | 76.3 | +0.5° |
| Effective top tube | not listed | not listed | |
| Chainstay length | not listed | not listed | |
| Wheelbase | 1171 | not listed | |
| BB drop | not listed | not listed | |
| Standover | not listed | not listed | |
| Seat tube length | not listed | not listed | |
| Head tube length | not listed | not listed |
Differences are the Santa Cruz Megatower Coil minus the Rocky Mountain Altitude Alloy. Full charts: 2021 Rocky Mountain Altitude Alloy, 2021 Santa Cruz Megatower Coil.
Where each sits in its class
Rocky Mountain Altitude AlloySanta Cruz Megatower Coil
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 | Rocky Mountain Altitude AlloyAlloy 30 | Santa Cruz Megatower CoilX01 Coil |
|---|---|---|
| Frame | Rocky Mountain FORM™ Alloy | Santa Cruz Megatower |
| Fork | Marzocchi Z1 | Fox 38 Factory |
| Rear shock | Fox Float Performance | Fox FLOAT DHX2 Factory |
| Shifter | Shimano Deore | SRAM X01 Eagle |
| Derailleur | Shimano Deore | SRAM X01 Eagle AXS |
| Cassette | Shimano Deore XT | SRAM Eagle |
| Chain | Shimano Deore M6100 | SRAM X01 Eagle |
| Crankset | Shimano Deore XT | SRAM X01 Eagle |
| Bottom bracket | Shimano SM-BBMT500 | not listed |
| Wheelset | Shimano MT410 | Santa Cruz Reserve 30 |
| Tire | Maxxis Minion DHF, Maxxis Minion DHR II DD | Maxxis Assegai, Maxxis Minion DHR II DD |
| Brake | Shimano MT4120 | SRAM Code Ultimate Stealth |
| Rotor | Shimano SM-RT64 | SRAM HS2 |
| Handlebar | Rocky Mountain AM | Santa Cruz AM Carbon |
| Stem | Rocky Mountain AM | Burgtec Enduro MK3 |
| Grips | Ergon GE10 EVO | not listed |
| Headset | FSA Orbit 57E | not listed |
| Dropper post | Rocky Mountain Toonie Drop | RockShox Reverb Stealth |
| Saddle | WTB Volt | not listed |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
