Carbon Aero Gravel Frameset | On&On Adventure

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On&On Adventure - Carbon Aero Gravel Frameset

£2,600

or £72.22 a month at 0% APR over 36 months. How it works

Size View geometry 1 2 3 4 5

ColourForest Green

Your frameset ships with our aero carbon seatpost. Choose the setback that suits your fit; there is no extra cost either way.

Seatpost setback Standard: 0mm

Carbon Stem

Length

£130

Carbon Flared Gravel Handlebar

Width

£170

Hope T47 Bottom Bracket

£115

CeramicSpeed T47 Bottom Bracket

Spindle

£275

The On&On Adventure Frameset is Pearson's performance gravel platform, designed as one of the first aerodynamically optimised gravel bikes on the market. Engineered for speed across all terrains, this frameset allows you to tailor your build, creating a bike that's fast, efficient, and adaptable. Whether you're racing on gravel or exploring off-road, the On&On Adventure delivers unmatched aerodynamics and versatility, making it the perfect foundation for your next high-performance gravel machine.

Material

Carbon, T700

Tyre clearance

Up to 45mm

Fork

On&On Adventure, carbon

Headset

1 1/2" integrated headset, CeramicSpeed SLT bearings

Bottom Bracket

Not included, requires T47e

Included with every build

Crash replacement

Discount to keep you riding

Lifetime warranty

On the frame and fork

Precision fit

£200 bike fit cashback

On&On Adventure is made for the long way round. 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.

Who it's for: Bikepackers, all-day gravel riders and explorers.

Where it goes: Loaded weekends, rough backroads and routes that keep going long after the tarmac ends.

Built around your fit: Every frameset is built to order. Choose your seatpost offset when you order, and our fit team will help you choose your size and the bar, stem and cranks to suit you.

	SIZE/CM	1/49	2/52	3/54	4/56	5/58
A	Frame reach	365	373	381	390	399
B	Frame stack	542	558	579	598	617
C	Effective top tube	521	539	553	568	583
D	Seat tube length	470	495	520	545	570
E	Head tube length	110	125	145	165	185
F	Seat angle	74.0	73.5	73.5	73.5	73.5
G	Head angle	70.5	71.0	71.5	71.5	71.5
H	BB drop	78.0	78.0	78.0	78.0	78.0
I	Wheelbase	1011	1020	1030	1046	1061
J	Chainstay length	435	435	435	435	435
K	Fork offset	50	50	50	50	50
L	Trail (40C Tyre)	69	69	66	66	66
	Rider height (ft/in)	5'2-5'7	5'6-5'10	5'9-6'0	5'11-6'3	6'2+
	Rider height (cm)	158-171	167-178	175-183	180-190	188+
	Inside leg (in)	29-31	30-33	32-35	34-37	36+
	Inside leg (cm)	73-79	77-83	81-87	86-92	91+

Frameset

Frame

On&On Adventure, carbon high-strength T700

Fork

On&On, carbon

Headset

1 1/2" integrated headset, CeramicSpeed SLT bearings

Bearings: CeramicSpeed SLT, 31 g each
Size: 1-1/2 in
Dimensions: 40 x 52 x 7 mm (ID x OD x width)

Bottom Bracket

Not included, requires T47e

Also on this build

Saddle Clamp

For 7x7mm rails

Seat Clamp

Integrated saddle clamp wedge with rubber cover

Rear Derailleur Hanger

Direct mount alloy hanger

Front Derailleur Hanger

Braze on alloy hanger

Front Wheel Axle

M12 x 1, 122mm length

Rear Wheel Axle

M12 x 1, 166mm length

Bolts

M5 bolts on all cage and rack mounts, and plugs for cable routing

Extras (Included)

Seat clamp rubber cover

Extras For Purchase

Available To Purchase

Expander Bolt, Headset Topcap, Spacers, Stem, Handlebar, Bottom Bracket

In the mud they cornered like they were on rails.

Simon Richardson · Jun 2023Read the review

Reviews

I find it so easy to ride in loose material, it steers exactly where you point it.
Garry Beasley | Sep 2024

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.