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2021 Norco Optic C Frame Kit vs 2023 Rocky Mountain Element C90

The Rocky Mountain Element C90 size closest to your M is the M. Compare the M instead

What changes on the Rocky Mountain Element C90

Compared with the Norco Optic C Frame Kit in M, the Rocky Mountain Element C90 in XL places the top of the head tube 13 mm higher and 55 mm further forward, relative to the bottom bracket. Its wheelbase is 69 mm longer, which can contribute to stability at speed.

Frame stack
+13 mm
Higher front end
Frame reach
+55 mm
Longer frame reach
Wheelbase
+69 mm
Longer: steadier at speed
Head angle
±0.0°
About the same head angle
Chainstays
n/a
One of the bikes has no number for this

The two frames

2021 Norco Optic C Frame Kit (M)The Norco Optic C Frame Kit frame drawn to scale.J 1196

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

MeasurementNorco Optic C Frame Kit MRocky Mountain Element C90 XLDifference
Reach450505+55 mm
Stack620633+13 mm
Head tube angle65.065.0±0.0°
Seat tube angle76.076.0±0.0°
Effective top tube605not listed
Chainstay length430not listed
Wheelbase11961265+69 mm
BB height337not listed
Standover680804+124 mm
Seat tube length415not listed
Head tube length110not listed
BB dropnot listed47

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

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

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.

PartNorco Optic C Frame KitC Frame KitRocky Mountain Element C90C90
Rear shockRockShox Super Deluxe DH Custom RC UltimateFox Float DPS Factory
Framenot listedRocky Mountain Element
Forknot listedFox 34 Performance
Shifternot listedShimano XTR M9250
Derailleurnot listedShimano XTR
Cassettenot listedShimano XTR
Tirenot listedMaxxis Rekon WT
Brakenot listedShimano XTR
Handlebarnot listedRace Face NEXT
Headsetnot listedFSA Orbit NO.57E
Dropper postnot listedFox Transfer Factory

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