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Masi Bikes

Coltello Geometry

Coltello Geometry

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Pure Speed, Stripped to the Essentials

The Coltello is Masi’s tribute to the purity of cycling — a single-speed fixie designed for those who crave the raw connection between rider and machine. Sleek, minimalist, and built for urban streets, the Coltello embodies the spirit of freedom and simplicity.

With its lightweight steel frame and clean lines, the Coltello is a modern nod to Masi’s racing heritage. Every pedal stroke translates into direct power, offering an unfiltered riding experience that demands skill, strength, and focus. Whether navigating city avenues, sprinting through urban grids, or competing in fixed-gear criteriums, the Coltello thrives on speed and precision.

The name Coltello, meaning "knife" in Italian, perfectly captures its sharp, agile riding experience. Like a blade slicing through the air, the Coltello delivers instant acceleration and nimble handling. Its minimalist design speaks to the fixie culture — a celebration of simplicity, where every component serves a purpose. No gears. No frills. Just pure, unadulterated speed.

Built for urban athletes and cycling purists, the Coltello is more than a bike — it’s a way of life. Whether you're navigating your city’s streets or pushing your limits on the track, the Coltello connects you to the true essence of riding. Embrace the simplicity. Feel the road. Ride with purpose. This is Coltello.

Color: Black
Size
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Order Inquiries: twdistributor@masibikes.com

SPECIFICATIONS

Specifications
FRAMESET
FrameMasi Alloy, ​Threaded BSA bottom bracket, Rim brake
ForkMasi Carbon, 1 1/8" - 1.5" tapered, QR type dropout, Track fork
ColorsBlack, White
DRIVETRAIN
CranksProwheel SOLID-246A-F, 46T​​
Pedals
ChainSingle Speed
Bottom BracketNECO BSA 68mm
Gear16T​​
Brake leverPromax 249A
Brake caliperPromax RC476, dual pivot
Freewheel/Cassette
WHEELS
TiresKENDA​ Kriterium K1018, 700x25c​
Wheels/RimsMasi Rim brake, Alloy rim, 35mm height
HubsAlloy​ Flip-Flop hub w/Track Nuts, 32H​
BRAKING SYSTEM
Derailleur Shifter
OTHER COMPONENTS
Grips/Tape
HandlebarMasi Brev M., Ø31.8mm / Black ​
StemMasi 31.8mm / -7° / Black​
Headset
SaddleMasi 280 x 139mm, Ti-Alloy Rail​
Seat PostMasi Aero type / Black​​

GEOMETRY

Geometry & Sizing
SIZEXSSMLXL
A. Top Tube (Effective)521mm525mm534mm560mm570mm
B. Seat Tube (C-T)490mm510mm530mm560mm580mm
C. Stack Height496mm505mm515mm531mm560mm
D. Reach398mm393mm396mm408mm410mm
E. Standover
F. Head Tube Length100mm110mm120mm135mm165mm
G. Head Angle74°74°74°74°74°
H. Seat Angle76°75.3°75°74°74°
I. Wheel Base958mm956mm962mm973mm983mm
J. Chainstay395mm395mm395mm395mm395mm
K. BB Drop45mm45mm45mm45mm45mm
L. Fork Offset45mm45mm45mm45mm45mm
M. Stem Length
N. Bar Width
O. Crank Length
P. Wheel Size700700700700700