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2025 Mason

Definition SRAM

An aluminum frame endurance bike with ultra high-end components and rim brakes.
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Manufacturer Price

£3,300($4,426)
Weight1.0 lbs (frame)  
FrameAluminum
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 12 Electronic
GroupsetRED XPLR eTap
BrakesRim
View on masoncycles.ccLearn about Mason
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Definition SRAM
Other Endurance bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

41 mph

Definition SRAM

39 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

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Reviews
road.cc
Mason Definition 3.0

Mar 2024 · Suvi Loponen

Continues to define how good an aluminium road bike can be, especially for steady, long miles

Highs
  • Beautiful build quality and details

  • Great all-weather compatibility and performance

  • Good tyre clearance for year-round riding

  • Mounting points for rack and mudguards

  • Wide size range

Lows
  • A little sluggish on steep climbs

Read Review

Cyclist
Mason Definition review

Nov 2022 · James Spender

A go-anywhere kind of bike that can hold its own on the road while being highly adept over a range of terrains and all weathers

Highs
  • Smooth

  • Versatile

  • Responsive

Lows
  • Weight

Read Review

Geometry
Specs
Build
Frame

MASON x Dedacciai Custom Aluminium.

ColorSensorblue / Shutterblack Metallic / Vela

Fork

MASON Aperture2 full carbon fork.

Headset

Select From: Deda & Chris King.

Stem

Select Various Lengths. Choose From: DEDA ZER0100 or ZERO2 - Black on Black.

Handlebar

Choice of Deda options. Other brands available on request.

Saddle

Choice of Fizik options. Other brands available on request.

Seatpost

MASON Penta carbon, microadjust.

TypeRigid

Groupset
Rear Derailleur

Rival AXS / Force AXS / Red AXS - Including XPLR options as Selected.

Crank

2x 48/35. 1x 42. Select From: Rival AXS / Force AXS / Red AXS.

Shifters

Rival AXS / Force AXS / Red AXS - Including XPLR options as Selected.

Cassette

2x 10-36. 1x 10-44 XPLR. Rival AXS / Force AXS / Red AXS - As Selected. Alternative ratios available on request.

Chain

Rival AXS / Force AXS / Red AXS - As Selected. Other options available on request.

Brakes

Rim

TypeRim

Wheels
Rims

Select From: HUNT / DT Swiss / Campagnolo. Other options available on request.

Tires

700c. Select From: Rene Herse / Schwalbe / Continental / Vittoria.

Rider Notes
Riders Also Viewed

First added October 25

Last updated March 21

Not listed for 69 days