2021 Norco Optic C Frame Kit vs 2023 Rocky Mountain Element C90
The XL is the Rocky Mountain Element C90 size closest to your XL Norco Optic C Frame Kit. 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 Element C90
Compared with the Norco Optic C Frame Kit in XL, the Rocky Mountain Element C90 in XL places the top of the head tube 5 mm lower and 5 mm further back, relative to the bottom bracket. Its wheelbase is 10 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- −10 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Norco Optic C Frame Kit is drawn. The Rocky Mountain Element C90 numbers we have for size XL are missing the chainstay length.
Geometry side by side
| Measurement | Norco Optic C Frame Kit XL | Rocky Mountain Element C90 XL | Difference |
|---|---|---|---|
| Reach | 510 | 505 | −5 mm |
| Stack | 638 | 633 | −5 mm |
| Head tube angle | 65.0 | 65.0 | ±0.0° |
| Seat tube angle | 76.0 | 76.0 | ±0.0° |
| Effective top tube | 669 | not listed | |
| Chainstay length | 440 | not listed | |
| Wheelbase | 1275 | 1265 | −10 mm |
| BB height | 337 | not listed | |
| Standover | 719 | 804 | +85 mm |
| Seat tube length | 485 | not listed | |
| Head tube length | 130 | not listed | |
| BB drop | not listed | 47 |
Differences are the Rocky Mountain Element C90 minus the Norco Optic C Frame Kit. Full charts: 2021 Norco Optic C Frame Kit, 2023 Rocky Mountain Element C90.
Where each sits in its class
Norco Optic C Frame KitRocky Mountain Element C90
Each bike is ranked against the other trail 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 | Norco Optic C Frame KitC Frame Kit | Rocky Mountain Element C90C90 |
|---|---|---|
| Rear shock | RockShox Super Deluxe DH Custom RC Ultimate | Fox Float DPS Factory |
| Frame | not listed | Rocky Mountain Element |
| Fork | not listed | Fox 34 Performance |
| Shifter | not listed | Shimano XTR M9250 |
| Derailleur | not listed | Shimano XTR |
| Cassette | not listed | Shimano XTR |
| Tire | not listed | Maxxis Rekon WT |
| Brake | not listed | Shimano XTR |
| Handlebar | not listed | Race Face NEXT |
| Headset | not listed | FSA Orbit NO.57E |
| Dropper post | not listed | Fox Transfer Factory |
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