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2026 Diamant

Mahon Style Plus (Midstep)

A 29″ aluminum frame commuter bike with high-end components and shimano hydraulic disc brakes.
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Manufacturer Price

€1,399($1,628)
Weight32.4 lbs  
FrameAluminum
SuspensionRigid
ForkAluminum
Wheels29″ Aluminum
DrivetrainBelt Drive, Internally Geared Hub
GroupsetGates CDN, Nexus
BrakesShimano Hydraulic Disc
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Spec Level

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

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Sizing
45cm

5'1" – 5'6"

50cm

5'4" – 5'10"

55cm

5'8" – 6'2"

Rider Fit Notes

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Price History
Geometry
Specs
Build
Frame

Alpha Smooth Aluminium, internal cable routing, post-mount disc, replaceable dropouts, belt split, ringlock mount

ColorsKupfer Metallic; Schwarzkirsch Metallic

Fork

Alloy disc touring with accessory mounts, 100x5 mm ThruSkew

Headset

FSA Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom

Stem

Bontrager Stem Elite, 70mm 7 degree, 31.8mm, Black - S: Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length; S: Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length; M: Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 80 mm length; M: Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 80 mm length; L: Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length; L: Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 90 mm length

Handlebar

Alloy lowriser, 31.8 mm, 25 mm rise, 11-degree backsweep, 660 mm width

Saddle

Selle Royal Vivo Moderate Ergo

Seatpost

Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length

TypeRigid

Pedals

Bontrager City pedals

Grips

Herrmans Clik, ergonomic, lock-on

Groupset
Crank

Gates Crankset, Model: CDN S150, Tooth: 50T, Material: Forged 6061-T6 Alloy, with Composite Front Sprocket and Steel hardware, Color: Black, With Bashguard, A: 29.5mm (inside crank - middle chainring), For Square BB, with 68mm shell only, BCD: 130mm, (For Beltline details, visit www.gatescarbondrive.com and download the Gates Tech Manual), Gates Part Number: FC S150 JIS 170 50T - S, M: Gates CDN for Belt, 50T, 170 mm length; L: Gates CDN for Belt, 50T, 175 mm length

Shifters

Shimano Nexus Shifter. Item Number: SL-C6000-8, 8-Speed, Revo Shifter, Inner Cable Length: 2100mm. (Visit si.shimano.com for compatibility, manuals and exploded views) - S, M, L: Shimano Nexus Revo, 8-speed; S, M, L: Shimano Nexus C6001 8-speed twist

Cassette

Gates Sprocket, Model: CDC, Tooth: 24T, Material: Coated Steel, Color: Silver, Tooth outer Diameter: 82.3, Mounting Web Thickness: 2.9, 3-Lobe Surefit Interface for Shimano, Gates Part Number: CT1124XSE-U - S, M, L: Gates CDC CentreTrack, 24T; S, M, L: Gates CDC CenterTrack, 24T

Brakes

Shimano MT200 hydraulic disc

TypeShimano Hydraulic Disc

Wheels
Rims

Bontrager Connection, double-wall, 32-hole, 20 mm width, Presta valve

Spokes

14 g stainless steel, black

Front Hub

Shimano 3.0 watt dynamo hub

Rear Hub

Shimano Nexus, 8-speed internal

Tires

Bontrager Girona Comp, sub tread puncture protection, Black Sidewall, Reflective stripe, 700x42C, made with recycled content

Disc Rotors

Shimano SM-RT30, CentreLock, 160 mm

Accessories
Lights

Spanninga Pimento Large XDVS Rear Light. 6V AC for Dynamo use. Rack mount 50mm. With standlight function. - S, M, L: Spanninga Pimento Large, with stand light function; S, M, L: Herrmans Nordic MR5, 100 lumen, LED, with stand light function

Fenders

SKS plastic, rear

Rider Notes
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First added July 1

Last updated May 30