Clockwork 129 Frame - 2018

January 14, 2026

Overview

Why the Clockwork 129?

Designed in Britain
Five year frame warranty
Custom butted 6061-T6 aluminium
29" wheels
130mm travel fork
Internal dropper seatpost
QR bolt through rear 12 x 148 boost hub spacing
Internal dropper seatpost compatible
Generous tyre clearance

Prefer 27.5 inch wheels? Try the Clockwork 137.

The new Clockwork 129 pushes the 29er hardtail into the realms of the hardcore arena. Running a 120mm travel fork this one's for the fast and loose big wheel fans out there.

Bigger brother to the 109, the Clockwork 129 has a 10mm longer top tube and its head angle is slackened by a degree. Geometry tuned for a more aggressive and capable longer travel fork.

With the same tidy frame features as the 137; neat external routing that tucks the cables neatly under the top tube, internal stealth cable routing for the Kore 150mm dropper post are nice touches. And the 12x148mm bolt-thru rear axle further helps the strength and rigidity of the 29er wheelset.

Trail centre hardtail, or out and out explorer, it’s up to you. But however you choose to ride the Clockwork 129 it will be a more than worthy trail buddy.

Specs & Options

SIZES AND COLOURS

Sizes

M L XL

Colour

Mountain Mint

Frame and Fork

6061-T6 Custom Butted OS Aluminium Tube. Wheel Size: 29.

Swingarm

Bolt Type Allen Key Head 12 x 174mm (Boost 148mm Hub)

Rear Shock

N/A

Headset

Finishing Kit

Seat Clamp

Strange QR

Geometry & Tech Info

Clockwork 127 Geometry

6061-T6 Custom Butted Aluminium
Frame Size	M	L	XL
Seat Tube	17"	18"	20"
A. Head Angle	67°	67°	67°
B. Seat Angle	74°	74°	74°
C. Top Tube	631	642	653
D. Effective TT	630	650	670
E. BB Height (axle diff)	-58	-58	-58
E. BB Height (from ground)	312	312	312
F. Chainstay	450	450	450
G. Head Tube	110	110	120
H. Wheelbase	1190	1210	1230
J. Reach	445	465	483
K. Stack	645	645	654
Stem Length	50	50	50
Standover	687	706	745
Unless otherwise indicated all measurements are in mm. Frame angles are measured static, without rider sag. Bottom bracket height from ground is with 740 mm Ø tyre.

technical Info

fork travel

OPTIMUM	MAXIMUM	MINIMUM
120 mm	120 mm	120 mm

Single crown

Triple Clamp

Rear Hub

12 x 148mm

Seatpost Ø

30.9 mm

Front Derailleur

Band

BB Shell

73mm ISCG05

1.1/8" Headset

Upper: ZS44/28.6
Lower: EC44/40

Ride Guide

Yes	Downhill	4.0 out of 5 stars
Yes	Freeride	4.0 out of 5 stars
Yes	Enduro	5.0 out of 5 stars
Yes	All-Mountain	4.0 out of 5 stars
Yes	XC Trail	4.0 out of 5 stars
Yes	Adventure	4.0 out of 5 stars
Yes	Touring	4.0 out of 5 stars
Yes	XC Racing	4.0 out of 5 stars

Bike Sizing Guidelines

5'6" — 5'10"

5'9" — 6'1"

6'0" — 6'5"

Please note: This is for guidance only. You may be taller or shorter, it doesn't mean our bikes will not fit you. The best way to determine the correct bike size for you is to try one. We've added some more explanation on sizing theory here: What size frame do I need?