2020 Specialized Enduro vs 2021 Rocky Mountain Altitude Alloy
The 27.5 M is the Rocky Mountain Altitude Alloy size closest to your S3 Specialized Enduro. 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 Rocky Mountain Altitude Alloy
Compared with the Specialized Enduro in S3, the Rocky Mountain Altitude Alloy in 27.5 M places the top of the head tube 13 mm lower and 11 mm further back, relative to the bottom bracket. Its wheelbase is 46 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −13 mm
- Lower front end
- Frame reach
- −11 mm
- Shorter frame reach
- Wheelbase
- −46 mm
- Shorter: quicker to change direction
- Head angle
- +0.9°
- Steeper: sharper steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Specialized Enduro is drawn. The Rocky Mountain Altitude Alloy numbers we have for size 27.5 M are missing the chainstay length.
Geometry side by side
| Measurement | Specialized Enduro S3 | Rocky Mountain Altitude Alloy 27.5 M | Difference |
|---|---|---|---|
| Reach | 464mm | 453 | −11 mm |
| Stack | 620mm | 607 | −13 mm |
| Head tube angle | 63.9° | 64.8 | +0.9° |
| Seat tube angle | 76° | 75.8 | −0.2° |
| Chainstay length | 442mm | not listed | |
| Wheelbase | 1246mm | 1200 | −46 mm |
| Seat tube length | 420mm | not listed | |
| Head tube length | 100mm | not listed | |
| Effective top tube | not listed | not listed | |
| BB drop | not listed | not listed | |
| Standover | not listed | not listed |
Differences are the Rocky Mountain Altitude Alloy minus the Specialized Enduro. Full charts: 2020 Specialized Enduro, 2021 Rocky Mountain Altitude Alloy.
Where each sits in its class
Specialized EnduroRocky Mountain Altitude Alloy
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 | Specialized EnduroS-Works | Rocky Mountain Altitude AlloyAlloy 30 |
|---|---|---|
| Fork | Fox FLOAT 36 Rhythm | Marzocchi Z1 |
| Rear shock | Fox Float X2 Factory | Fox Float Performance |
| Shifter | Shimano XTR M9100 | Shimano Deore |
| Derailleur | Shimano XTR M9100 | Shimano Deore |
| Cassette | Shimano XTR M9100 | Shimano Deore XT |
| Chain | Shimano XTR M9100 | Shimano Deore M6100 |
| Crankset | Race Face Next | Shimano Deore XT |
| Wheelset | Roval Traverse SL | Shimano MT410 |
| Tire | Specialized Butcher | Maxxis Minion DHF, Maxxis Minion DHR II DD |
| Brake | Shimano XTR M9120 | Shimano MT4120 |
| Handlebar | Roval Traverse SL | Rocky Mountain AM |
| Stem | Specialized Deity | Rocky Mountain AM |
| Grips | Specialized Deity | Ergon GE10 EVO |
| Seatpost | RockShox Reverb AXS | not listed |
| Saddle | Specialized Myth 155 | WTB Volt |
| Frame | not listed | Rocky Mountain FORM™ Alloy |
| Bottom bracket | not listed | Shimano SM-BBMT500 |
| Rotor | not listed | Shimano SM-RT64 |
| Headset | not listed | FSA Orbit 57E |
| Dropper post | not listed | Rocky Mountain Toonie Drop |
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