A chalk gravel trail winding across open downland with riders in the distance

On&On Adventure

About

Know No Bounds

A gravel bike built for the long haul. Extensive mounts take bags and bottles, there is clearance for tyres up to 45c, and the handling stays steady and sure when the day stretches out.

FRAME MATERIAL

Carbon

TYRE CLEARANCE

up to 45mm

SYSTEM WEIGHT

from 8.84kg

Riders on Pearson On&On Adventure bikes on a chalk trail across open downland

On&On Adventure · Details

The On&On Adventure, up close.

6 key details. Start the tour and the camera takes you through each one.

Pearson On&On Adventure frameset in Dune Stone, three-quarter view

The frame is built from T700 carbon for high strength across varied terrain.
Its construction is rigorously lab tested to ISO 4210.

T700 carbon is specified for its strength. The complete frameset is aero optimised and UCI approved for competition.
A threaded T47 bottom bracket from Hope or Ceramic Speed, depending on the build.

T47 is threaded, durable and simple to service, so any good workshop can look after it. The headset features Ceramic Speed's SLT.
The integrated carbon bar and stem create a clean, aerodynamic front end.

The shape of the integrated bars and stem is aerodynamically optimised and creates a clean aesthetic.
Extensive luggage and mudguard mounts mean you can prepare for any journey.
Carry more, or simply make room for frame bags.

The fork includes dedicated mounting points for luggage carriers and full length mudguards. These considered details let you adapt the bike for overnighters, commutes or winter training.
The On&On has a gravel wheelbase as part of its adventure focused design.
Its geometry is designed specifically for adventure riding.
The frame and fork have clearance for tyres up to 45c.
This allows you to tune your ride for comfort and grip.

Generous clearance lets you choose the right tyre for the terrain ahead. The bike is supplied with 45c Vittoria Terreno T80 tyres.

01 / 06 Down tube

High strength carbon frame
The frame is built from T700 carbon for high strength across varied terrain.
Its construction is rigorously lab tested to ISO 4210.

Why we built it this way

T700 carbon is specified for its strength. The complete frameset is aero optimised and UCI approved for competition.
02 / 06 Bottom bracket

Threaded T47
A threaded T47 bottom bracket from Hope or Ceramic Speed, depending on the build.

Why we built it this way

T47 is threaded, durable and simple to service, so any good workshop can look after it. The headset features Ceramic Speed's SLT.
03 / 06 Head tube

Integrated carbon cockpit
The integrated carbon bar and stem create a clean, aerodynamic front end.

Why we built it this way

The shape of the integrated bars and stem is aerodynamically optimised and creates a clean aesthetic.
04 / 06 Fork

Carry everything you need
Extensive luggage and mudguard mounts mean you can prepare for any journey.
Carry more, or simply make room for frame bags.

Why we built it this way

The fork includes dedicated mounting points for luggage carriers and full length mudguards. These considered details let you adapt the bike for overnighters, commutes or winter training.
05 / 06 Top tube

Adventure focused geometry
The On&On has a gravel wheelbase as part of its adventure focused design.
Its geometry is designed specifically for adventure riding.
06 / 06 Fork crown · Front

Generous tyre clearance
The frame and fork have clearance for tyres up to 45c.
This allows you to tune your ride for comfort and grip.

Why we built it this way

Generous clearance lets you choose the right tyre for the terrain ahead. The bike is supplied with 45c Vittoria Terreno T80 tyres.

Lifetime Warranty

Lifetime frame and fork warranty for the original owner.

Hand delivery

Built, set up to your fit and hand delivered by a Pearson technician, ready to ride.

Built around you

Up to £200 towards a professional bike fit

Proven Customer Care

Always doing right by you.

On&On Adventure · Made to order

Build your On&On Adventure.

Pick a colour and a groupset; see it exactly as it will be built. Spin it, zoom it, put it in your garden with AR.

System weight

Groupset

Wheelset

Colour

Groupset

Find your sizeIn two minutes

£3,600 Pay in full

Continue this build

Fit

Where your hands and hips sit.

Handling

How it steers and settles.

On&On geometry, every size
Measurement
Rider heightcm	158 to 171	167 to 178	175 to 183	180 to 190	188 and up
Fit
	365	373	381	390	399
	542	558	579	598	617
	521	539	553	568	583
	470	495	520	545	570
	110	125	145	165	185
	74.0	73.5	73.5	73.5	73.5
Handling
	70.5	71.0	71.5	71.5	71.5
	69	69	66	66	66
	50	50	50	50	50
	1011	1020	1030	1046	1061
	435	435	435	435	435
	78.0	78.0	78.0	78.0	78.0

What carbon is the On&On Adventure frame made from?

The On&On Adventure uses T700 high-strength Toray carbon construction. T700 is chosen for its durability and impact resistance, which matter on long gravel rides and loaded touring where the bike faces varied, unpredictable terrain. Despite the adventure focus, the frame is aero-optimised: tube shaping and seatpost geometry are designed to reduce drag without compromising carrying capacity or rider comfort on long days.

How much does the On&On Adventure frameset weigh?

The On&On Adventure frame weighs 1268g. The fork weighs 470g. Combined frameset weight is approximately 1738g, measured at size 3. The extra weight over the Race comes from its tougher build and full set of mounts.

What does a complete On&On Adventure bike weigh?

The GRX 825 Di2 build (with ERE Explorator CCR45 carbon wheels) weighs 8.84kg. The GRX 820 mechanical build (with ERE Tenaci GX23 Alloy wheels) weighs 9.32kg. Measurements at size 3.

What is the maximum tyre clearance on the On&On Adventure?

The On&On Adventure takes tyres up to 45c. Standard builds come on 45c Vittoria Terreno T80 tyres, which give confident grip and low rolling resistance across gravel, packed trail and light off-road surfaces.

Is the On&On Adventure tubeless-ready?

Yes. ERE Explorator CCR45 carbon wheels (GRX 825 Di2 builds) and ERE Tenaci GX23 Alloy wheels (GRX 820 builds) are both tubeless-compatible. Standard builds ship with inner tubes. Converting to tubeless is straightforward with a tubeless valve kit and sealant. Running tubeless on gravel allows lower tyre pressures for improved traction and reduces pinch flat risk on rough terrain.

What bottom bracket standard does the On&On Adventure use?

T47 across all builds. The GRX 825 Di2 build comes with a CeramicSpeed T47 bottom bracket and the GRX 820 build with a Hope T47. Both are threaded, so they are straightforward to service and replace.

What groupset options are available on the On&On Adventure?

Two options: Shimano GRX 825 Di2 (2x electronic, 12-speed) and Shimano GRX 820 (1x mechanical, 12-speed). The 2x Di2 build gives a wider gear range, which helps on loaded rides and long climbs. The 1x GRX 820 build is simpler and easier to look after on the road or trail without specialist tools. The On&On Adventure is the only Pearson gravel bike offered with a 2x drivetrain.

What wheels come on the On&On Adventure?

The GRX 825 Di2 build comes with ERE Explorator CCR45 carbon wheels, 45mm deep with a 25mm internal width. The GRX 820 build comes with ERE Tenaci GX23 Alloy wheels. Both are tubeless-compatible. The alloy option on the GRX 820 provides robust performance at a more accessible price point, and is a practical choice for rough terrain where wheel damage risk is higher.

What luggage and accessory mounts does the On&On Adventure have?

The On&On Adventure is the most versatile mounting platform in the Pearson range. Provisions include: three bottle cage bosses (two down tube, one seat tube), a top tube bag boss, a saddle bag attachment point, front axle cargo mounts, fork leg bosses for bags or cargo, and mudguard mounts front and rear.

Can the On&On Adventure fit mudguards?

Yes. Mudguard mounts are built into the fork crown and rear frame. The frame clears tyres up to 45c and the bike comes on 45c tyres, so fitting mudguards means a narrower tyre: a 40c tyre leaves room for a mudguard. For full-coverage mudguard use in UK winter or wet-weather riding, the On&On Adventure is the model in the Pearson range best suited to the task.

Is the On&On Adventure UCI approved?

The On&On Adventure is certified to ISO 4210 safety standard. It is not UCI approved. For the vast majority of gravel events, sportives, and adventure rides this makes no difference. If you are competing in a UCI-sanctioned event where equipment approval is formally required, the On&On Race is our UCI-approved gravel model.

Can I fit racks or panniers to the On&On Adventure?

Yes. The On&On Adventure has threaded frame bosses for rear rack fitment. For front carrying, the fork leg bosses and front axle cargo mounts accommodate a range of bikepacking-oriented front racks and cargo cages. Standard pannier racks using the seat stay and chainstay bosses are compatible with most touring-spec racks designed for use with thru-axle dropouts.

For specific rack model compatibility, contact us on 020 3828 7696 or email [email protected] with the rack you are considering and we can confirm the fitment.

Can I fit a dropper post to the On&On Adventure?

The On&On Adventure has internal cable routing provisions compatible with a dropper post. Contact us before purchasing a dropper post to confirm compatibility with your seatpost diameter and the specific routing system of your chosen dropper. An internal dropper cable should be routed before the bike is fully built if you are purchasing a frameset.

What tyre widths work best for bikepacking on the On&On Adventure?

The On&On Adventure comes on Vittoria Terreno T80 45c tyres, the widest the frame clears, for the most cushioning and grip on gravel and trail surfaces with a loaded bike.

For technical off-road or wet-weather bikepacking routes where mud builds up, a 40 to 42c tyre leaves more room between tyre and frame.