Road

Mamtor [Founders Batch]

*Payment secures your place in the next batch

Next batch Shipping:

June 2026

Description

The Mamtor is our definitive expression of a modern road bike.

Road

Mamtor [Founders Batch]

*Payment secures your place in the next batch

Next batch Shipping:

June 2026

Description

The Mamtor is our definitive expression of a modern road bike.

Road

Mamtor [Founders Batch]

*Payment secures your place in the next batch

Next batch Shipping:

June 2026

Description

The Mamtor is our definitive expression of a modern road bike.

Details

The Mamtor is designed to be the bike you reach for first. Its geometry and structure resolve the competing demands of contemporary road riding into a single, assured form. Smooth tarmac, broken lanes, the final stretch home at speed - it holds its line and so you don’t have to.

What makes the Mamtor special is its sense of inevitability. Every decision supports a ride that feels natural and composed, as if the bike could not be otherwise. It is built for riders who value how something is made as much as how it is used - a road bike intended to be chosen again and again.

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Limited to 25 frames worldwide, the Founders’ Batch introduces the Mamtor - a modern road bike developed with the same restraint, care, and depth that have defined Quirk for over a decade.

Founders’ Batch Orders Include:

  • A unique polished stainless steel Founders’ Batch head badge

  • Each frame individually numbered

  • Founders’ Build Notes documenting the thinking behind the Mamtor

  • An invitation to a private London workshop ride and evening

*Orders for the Founders’ Batch are open now and will close on 31 March. Once closed, this specification will not be produced again.

Specifications

Frame

Columbus Life tubing joined to our proprietary 3D printed stainless steel dropouts, head tube and seat cluster

Frames hand-built in London

Fork

Enve All-Road In-Route 100x12mm carbon fork with 1.1/2"-1.1/8" tapered steerer

Mudguard Mounts

Paint & Protection

Each frame is hand-painted in the UK in Quirk signature colourways

Components

Enve In-Route Aero Stem and spacers colour-matched to frame

UDH hanger (SRAM full mount derailleurs compatible)

Quirk signature 3D printed titanium top cap

Chris King AeroSet bearings

Quirk integrated seat clamp

Front and rear 12mm axles

Mounts

2 sets of bottle bosses

Front and rear mudguard mounts

Compatibility

Compatible with Shimano Di2, SRAM AXS and Campagnolo Wireless electronic road and gravel groupsets

Chainsets - Double - max size 53-39T. Single - max size 46T

Bottom bracket - T47 68mm (not included)

Front Mech - 31.8mm band-on (not included)

Seatpost - 27.2mm (not included)

Seatpost clamp - Internal wedge system with T25 bolt

Rotors - 160mm max front and rear

SHIS Headset specification – IS52 | IS52

Tyre Clearance

Max measured width – 700 x 40

Max with guards 700 x 30 (35mm guards)

Rider Weight Limit

Rider weight Limit – 110kg

Warranty

5 Year warranty on Frame & Forks

2 year warranty on components

Limited to original purchaser



Framekit

[Additional Components]


Seatpost

Enve 27.2mm Carbon seatpost

Bars

Enve SES AR Road In-Route Handlebar



Rolling Chassis

[Additional Components]


Seatpost

Enve 27.2mm Carbon seatpost

Bars

Enve SES AR Road In-Route Handlebar

Wheels

Enve SES 3.4 | SES 4.5 | AR40 carbon wheelset

Tyres

Enve SES Road Tyre

Frame

Columbus Life tubing joined to our proprietary 3D printed stainless steel dropouts, head tube and seat cluster

Frames hand-built in London

Fork

Enve All-Road In-Route 100x12mm carbon fork with 1.1/2"-1.1/8" tapered steerer

Mudguard Mounts

Paint & Protection

Each frame is hand-painted in the UK in Quirk signature colourways

Components

Enve In-Route Aero Stem and spacers colour-matched to frame

UDH hanger (SRAM full mount derailleurs compatible)

Quirk signature 3D printed titanium top cap

Chris King AeroSet bearings

Quirk integrated seat clamp

Front and rear 12mm axles

Mounts

2 sets of bottle bosses

Front and rear mudguard mounts

Compatibility

Compatible with Shimano Di2, SRAM AXS and Campagnolo Wireless electronic road and gravel groupsets

Chainsets - Double - max size 53-39T. Single - max size 46T

Bottom bracket - T47 68mm (not included)

Front Mech - 31.8mm band-on (not included)

Seatpost - 27.2mm (not included)

Seatpost clamp - Internal wedge system with T25 bolt

Rotors - 160mm max front and rear

SHIS Headset specification – IS52 | IS52

Tyre Clearance

Max measured width – 700 x 40

Max with guards 700 x 30 (35mm guards)

Rider Weight Limit

Rider weight Limit – 110kg

Warranty

5 Year warranty on Frame & Forks

2 year warranty on components

Limited to original purchaser



Framekit

[Additional Components]


Seatpost

Enve 27.2mm Carbon seatpost

Bars

Enve SES AR Road In-Route Handlebar



Rolling Chassis

[Additional Components]


Seatpost

Enve 27.2mm Carbon seatpost

Bars

Enve SES AR Road In-Route Handlebar

Wheels

Enve SES 3.4 | SES 4.5 | AR40 carbon wheelset

Tyres

Enve SES Road Tyre

Frame

Columbus Life tubing joined to our proprietary 3D printed stainless steel dropouts, head tube and seat cluster

Frames hand-built in London

Fork

Enve All-Road In-Route 100x12mm carbon fork with 1.1/2"-1.1/8" tapered steerer

Mudguard Mounts

Paint & Protection

Each frame is hand-painted in the UK in Quirk signature colourways

Components

Enve In-Route Aero Stem and spacers colour-matched to frame

UDH hanger (SRAM full mount derailleurs compatible)

Quirk signature 3D printed titanium top cap

Chris King AeroSet bearings

Quirk integrated seat clamp

Front and rear 12mm axles

Mounts

2 sets of bottle bosses

Front and rear mudguard mounts

Compatibility

Compatible with Shimano Di2, SRAM AXS and Campagnolo Wireless electronic road and gravel groupsets

Chainsets - Double - max size 53-39T. Single - max size 46T

Bottom bracket - T47 68mm (not included)

Front Mech - 31.8mm band-on (not included)

Seatpost - 27.2mm (not included)

Seatpost clamp - Internal wedge system with T25 bolt

Rotors - 160mm max front and rear

SHIS Headset specification – IS52 | IS52

Tyre Clearance

Max measured width – 700 x 40

Max with guards 700 x 30 (35mm guards)

Rider Weight Limit

Rider weight Limit – 110kg

Warranty

5 Year warranty on Frame & Forks

2 year warranty on components

Limited to original purchaser



Framekit

[Additional Components]


Seatpost

Enve 27.2mm Carbon seatpost

Bars

Enve SES AR Road In-Route Handlebar



Rolling Chassis

[Additional Components]


Seatpost

Enve 27.2mm Carbon seatpost

Bars

Enve SES AR Road In-Route Handlebar

Wheels

Enve SES 3.4 | SES 4.5 | AR40 carbon wheelset

Tyres

Enve SES Road Tyre

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Geometry


49 (XS)

52 (S) 

54 (M) 

56 (M/L) 

58 (L) 

61 (XL)


Stack 

527 mm 

546 mm 

558 mm 

579 mm 

599 mm 

617 mm


Reach 

364 mm 

374 mm 

382 mm 

389 mm 

397 mm 

403 mm


Seat Tube 

495 mm 

500 mm 

515 mm 

530 mm 

550 mm 

565 mm


Top Tube 

521 mm 

537 mm 

548 mm 

561 mm 

575 mm 

586 mm


Head Tube 

115 mm 

135 mm 

145 mm 

165 mm 

185 mm 

205 mm


Head Angle 

71.0° 

71.0° 

71.5° 

72.0° 

72.0° 

72.0°


Seat Angle 

73.5° 

73.5° 

73.5° 

73.5° 

73.5° 

73.5°


Chainstay 

425 mm 

425 mm 

425 mm 

425 mm 

425 mm 

425 mm


Wheelbase 

992 mm 

1008 mm 

1016 mm 

1021 mm 

1035 mm 

1047 mm


Trail 

65 mm 

65 mm 

61 mm 

63 mm 

63 mm 

63 mm


BB Drop 

75 mm 

75 mm 

75 mm 

75 mm 

75 mm 

75 mm


Standover 

770 mm 

781 mm 

795 mm 

812 mm 

832 mm 

848 mm



49 (XS)

52 (S) 

54 (M) 

56 (M/L) 

58 (L) 

61 (XL)


Stack 

527 mm 

546 mm 

558 mm 

579 mm 

599 mm 

617 mm


Reach 

364 mm 

374 mm 

382 mm 

389 mm 

397 mm 

403 mm


Seat Tube 

495 mm 

500 mm 

515 mm 

530 mm 

550 mm 

565 mm


Top Tube 

521 mm 

537 mm 

548 mm 

561 mm 

575 mm 

586 mm


Head Tube 

115 mm 

135 mm 

145 mm 

165 mm 

185 mm 

205 mm


Head Angle 

71.0° 

71.0° 

71.5° 

72.0° 

72.0° 

72.0°


Seat Angle 

73.5° 

73.5° 

73.5° 

73.5° 

73.5° 

73.5°


Chainstay 

425 mm 

425 mm 

425 mm 

425 mm 

425 mm 

425 mm


Wheelbase 

992 mm 

1008 mm 

1016 mm 

1021 mm 

1035 mm 

1047 mm


Trail 

65 mm 

65 mm 

61 mm 

63 mm 

63 mm 

63 mm


BB Drop 

75 mm 

75 mm 

75 mm 

75 mm 

75 mm 

75 mm


Standover 

770 mm 

781 mm 

795 mm 

812 mm 

832 mm 

848 mm


Size Guide


XS

S

M

M/L

L

XL

Frame Size [cm]

49

52

54

56

58

61

Height [cm]

155-163

163-170

170-175

175-180

180-188

188-196


XS

S

M

M/L

L

XL

Frame Size [cm]

49

52

54

56

58

61

Height [cm]

155-163

163-170

170-175

175-180

180-188

188-196

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Frequently Asked Questions

Dive into our replies to some of the most frequently asked questions you might have in relation to Quirk Cycles. Still in doubt? Please have a look at our contact form to get in touch with our Customer Care team.

Dive into our replies to some of the most frequently asked questions you might have in relation to Quirk Cycles. Still in doubt? Please have a look at our contact form to get in touch with our Customer Care team.

Can I buy a complete bike?

How do I choose the correct frame size?

What colours do you offer?

How do I choose components?

Where are Quirk bikes made?

Can I have custom geometry?

Where do you ship to?

Do prices include VAT and duty?

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Made in London.

Engineered with precision.

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Made in London.

Engineered with precision.

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© 2026 ///QUIRK CYCLES