Titanium Gravel Bike

Grit

Built for where the road ends.

A titanium adventure gravel platform built for fast mixed-surface riding, loaded utility, and the confidence to go further.

Complete bikes from $9,580.00 AUD

Framesets from $4,250.00 AUD

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The Grit is an unrestricted adventure platform built for riders who want one bike with real range: fast off-road riding, loaded utility, all-road capability, and the durability to handle rougher terrain and longer days.

Designed for the way gravel is ridden now - broad compatibility, practical utility, clean integration, and the freedom to configure the bike around how you ride.

Stable, adaptable, and refined. The Grit can be built light, loaded, simple, or fully equipped without losing the ride quality and control expected from a Bossi.

Key features

01
Adventure gravel geometry
The Grit is designed around stability, control, and long-distance utility. Approximately 67 mm of trail gives stable, responsive handling with high-volume gravel tyres, while the longer front-centre reduces toe overlap and improves control on rough terrain. The 435 mm chainstays support traction, tyre clearance, and loaded stability, while the increased effective stack creates a more sustainable position for long rides and technical surfaces.
02
Dual wheelset capability
The Grit works well for riders who want one bike with two distinct setups. With high-volume gravel tyres, trail sits around 67 mm for stability and off-road control. With narrower road tyres around 30 mm, trail reduces to approximately 62 mm, giving the bike a sharper all-road character for faster sealed and mixed-surface rides.
03
Practical bikepacking
The Grit includes the mounting provisions expected from a true adventure gravel bike: rack mounts, fender mounts, top tube mounts, multiple bottle positions, and fork mounts. These options allow the bike to be configured for daily gravel, long-distance riding, commuting, or loaded bikepacking without relying on workaround solutions.
04
Generous Clearance
Clearance for up to 700c x 50 mm or 650b x 2.2" tyres gives the Grit the range to suit different terrain, loads, and riding styles. Larger tyres improve traction, comfort, and control on rough surfaces, while narrower setups sharpen the bike for faster all-road use.
05
Butted titanium construction
Butted titanium tubing places material where strength is required, then reduces wall thickness through selected sections to lower weight and improve compliance. This helps the frame manage vibration and repeated impacts over rough terrain, reducing fatigue without dulling the response under power.
06
Modern compatibility
The T47 bottom bracket provides a strong, serviceable threaded interface suited to modern gravel drivetrains, supporting internal routing requirements and reducing the service issues often associated with press-fit systems. 3D-printed UDH dropout architecture improves drivetrain compatibility and long-term serviceability, including full support for current SRAM Transmission standards.
07
Unrestricted routing
The Grit supports practical routing for different build styles, including provisions for dynamo lighting and dropper post use. This expands the platform for riders building around long-distance, remote, or more technical gravel use.

Design brief

Stable. Capable. Adaptable. Durable. Refined. Confident. Unrestricted.

The Grit was developed as a response to a clear shift in gravel riding. What began as a relatively simple category had become technically fragmented: different drivetrain formats, routing preferences, cockpit systems, tyre setups, luggage requirements, and expectations around crossover road performance. Riders no longer needed one narrow gravel configuration. They needed a frame platform that could support very different build directions without forcing compromise.

The design objective was to create an unrestricted adventure platform: a gravel bike with enough compatibility, clearance, utility, and durability to support serious off-road use, while still preserving the handling precision and ride quality that make the bike enjoyable when ridden fast, unladen, or on the road.

That meant designing the frame architecture around choice rather than one fixed build style. The headtube system was developed to support both conventional external routing and fully integrated cockpit systems, allowing riders to prioritise serviceability, travel practicality, cockpit preference, or front-end integration. The bottom bracket, yoke, and dropout architecture were developed around the same principle, giving the frame the internal space and routing pathways needed for mechanical, wireless, and wired electronic drivetrains.

The geometry was refined to make the bike more useful across its full range of setups. Longer front-centre reduces toe overlap with larger tyres and improves control on rough terrain. Increased bottom bracket drop lowers centre of gravity and improves stability, particularly as shorter cranks become more common in gravel. The 3D-printed yoke allows the rear end to remain responsive while still supporting tyre clearance, drivetrain clearance, and internal routing through one of the most constrained areas of the frame.

The utility brief was equally deliberate. The goal was not to cover the frame in mounts or turn it into a heavy expedition bike. It was to provide the practical features riders actually use: rack and fender compatibility, three bidon mounts, top tube mounts, fork mounts, dynamo routing, dropper compatibility, UDH, T47, and a 27.2 mm seatpost, while keeping the frame visually refined and mechanically coherent.

The result is a titanium gravel platform with more compatibility, more clearance, more utility, and more configuration range than a conventional gravel frame. A thoroughbred adventure bike with genuine all-road capability, designed for riders who want one platform that can be built light, loaded, simple, integrated, mechanical, electronic, fast, or practical, without the frame being the limiting factor.

How it rides

The Grit is an adventure gravel bike built around stability, control, and long-distance utility. It is intended for riders who want one platform to handle fast gravel, mixed-surface riding, bikepacking, and all-road use without becoming nervous under load or vague on faster terrain.

The fit position is more sustainable than an aggressive gravel race setup. The external bearing cup increases effective stack without changing the underlying frame geometry, reducing saddle-to-bar drop and improving visibility, weight distribution, and fatigue management over longer rides.

A relaxed head tube angle and approximately 67 mm of trail with gravel tyres creates stability on loose surfaces, fast descents, and rough terrain. The longer front-centre reduces toe overlap with larger tyres and improves front-end weight distribution, while the 76 mm bottom bracket drop lowers centre of gravity for better cornering and loaded ride-quality. The 435 mm chainstays support large-volume tyres, drivetrain clearance, rear-wheel traction, and loaded riding. With narrower road tyres, trail reduces to approximately 62 mm, creating a sharper all-road setup for riders using a second wheelset.

Butted titanium tubing supports the same use case. Wall thickness is increased where strength is required, then reduced through selected tube sections to lower weight and improve compliance. That compliance manages vibration and repeated impacts over rough surfaces, reducing fatigue without dulling response under power.

3D-printed yoke and dropouts
A printed yoke not only allows for wider chainring and tyre clearance but maintains internal cable routing and produces a seemless integrated finish.
Hydroformed profiles
The Grit tubeset is hydroformed in key areas to refine ride quality, improved durability, and add extra utility.
Flexible Routing
Compatible with fully-integrated, semi-integrated, and external cable routing offering full compatibality with all cockpit options.
Linished Welds
Welds are linished smooth by hand for a near seamless connection. The process is highly labour-intensive, but it is central to the Grit's refined finish.

Grit

Geometry

Size 50 52 54 56 58 60

Compare with

Measurement	50	52	54	56	58	60
AEffective top tube	526	534	549	564.5	583	596
BReach	372	374	381	388	395	401
CStack	543	554	567	586	605	620
DHead tube length	116	125	140	160	180	195
EHead tube angle	70.2°	71°	71.25°	71.25°	71.75°	72°
FSeat tube angle	74.25°	73.75°	73.5°	73.25°	72.75°	72.5°
GSeat tube length (c-c)	440	465	485	510	530	550
HChainstay length	435	435	435	435	435	435
IWheelbase	1023	1020	1031	1044.5	1053	1061
JFront centre	598.5	595	605	619	627	635
KBB drop	78	78	76	76	74	74
LFork offset	50	50	50	50	50	50
Frame weight	1690g	1730g	1770g	1860g	1890g	1910g
Fork weight	540g	540g	540g	540g	540g	540g
Rider height (cm)	160–168	168–173	173–178	178–183	183–188	188–196

Measurements in millimetres unless shown otherwise.

Find your size

Your height in cm

These height ranges are approximate only. Some riders may fall between sizes depending on leg length, torso length, arm length, mobility and desired riding position. If you are unsure which size is right for you, we recommend getting in touch before ordering.

Book a consultation

Core builds

Core Builds are configured through the options in the bike builder. Each build includes a curated specification, with selected rider-specific choices such as cockpit sizing, gearing, wheelset, tyres, saddle, and other available options confirmed before checkout.

Each Bossi is built to order. Once your order is placed, we will review your selected specification, confirm component availability, and provide an estimated build date. Typical Core Build lead times are 2–4 weeks, depending on frame availability, component supply, and current workshop scheduling.

Core Builds are limited to the options shown on this page. If you have a specific specification, component request, or more involved build in mind, please contact us to discuss a Custom Project.

GRX 1x Mech
- Bossi Grit frameset
- Shimano GRX RX 822 mech groupset
- Bossi Nomad carbon wheelset
- Cockpit selection chosen in the bike builder
- Prologo Nago saddle
- Pirelli Cinturato M Gravel tyres
- Bossi black bartape
- Tubeless
Rival AXS E1
- Bossi Grit frameset
- SRAM Rival AXS E1 XPLR/ or Eagle transmission groupset (matches cassette selection)
- Bossi Nomad carbon wheelset
- Cockpit selection chosen in the bike builder
- Prologo Nago saddle
- Pirelli Cinturato M Gravel tyres
- Bossi black bartape
- Tubeless
Force AXS E1
- Bossi Grit frameset
- SRAM Force AXS E1 XPLR / Eagle groupset (matches cassette selection)
- Bossi Nomad carbon wheelset
- Cockpit selection chosen in the bike builder
- Prologo Nago saddle
- Pirelli Cinturato M Gravel tyres
- Bossi black bartape
- Tubeless
RED AXS E1
- Bossi Grit frameset
- SRAM Red AXS E1 XPLR / Eagle groupset (matches cassette selection)
- Bossi Nomad carbon wheelset
- Cockpit selection chosen in the bike builder
- Prologo nago saddle
- Pirelli Cinturato M Gravel tyres
- Bossi black bartape
- Tubeless

Build yours

Frameset configurations

Fully integrated routing
Installation of a 1.5" bearing cup creates compatibility with the majority of fully integrated cockpits on the market. Cable entries are covered with titanium blanking plates. Ships with Nomad fork. See link below for more details.
Semi internal routing
Installation of 1.125" bearing cup allows for conventional cable routing leading to easier maintenance and packing when travelling. Shipped with Nomad ADV fork. See link below for more details.

Specifications

Features and TEch Specs

Compatible with fully integrated and semi-internal routing
3AL-2.5V titanium tubing
6AL-4V titanium bottom bracket (T47 86mm)
6AL-4V titanium head tube
6AL-4V titanium 3D printed Sram UDH dropouts
Butted seat post and down tube
Hydroformed top tube with flattened underside
Hydroformed double-ovalised down tube
3D printed chain stay yoke
Toray T800 monocoque carbon flat-mount disc fork
50mm fork offset
Double ovalised chain stays
Tapered and lowered seat stays
3 x bidon mounts
Clearance for 1L bidon

Flat mount disc brakes
12 x 100mm front and 12 x 142mm rear Thru-axle
Tapered head tube ZS 44mm upper – 1 1/2” integrated lower
Mechanical / electronic groupset compatible
Top tube mounts
Internal cable routing
27.2mm seatpost
Laser engraved logos
Pannier rack mounts on fork and seat stays
Full fender mounts front and rear
Clearance for 50c(700c) and 2.2"(650b) tyres
Brush Finish
CNC engraved headtube
Suitable for 700c and 650b wheelsets

Size guide

Bossi frames are offered in sizes 50, 52, 54, 56, 58 and 60. The right size for you will depend on more than height alone, including your proportions, flexibility, riding style and fit preferences.

As a general guide:

50 suits smaller riders, typically around 160–168 cm

52 suits riders around 168–173 cm

54 suits riders around 173–178 cm

56 suits riders around 178–183 cm

58 suits riders around 183–188 cm

60 suits taller riders, typically around 188–196 cm

These height ranges are approximate only. Some riders may fall between sizes depending on leg length, torso length, arm length, mobility and desired riding position.

If you are between sizes, the best option will depend on how you want the bike to fit and feel. A smaller size may offer a slightly more compact and responsive fit, while a larger size may provide a little more reach and stack.

If you are unsure which size is right for you, we recommend getting in touch before ordering. We are happy to review your current bike fit, body dimensions and intended use to help guide you into the right size.

Frequently asked questions

How do I choose the right size?

Use the size guide on this page as a starting point. The right size will also depend on your proportions, flexibility, riding style and fit preferences. If you are unsure, get in touch and we can help guide you based on your measurements and current bike.

If you've had a professional bike fit before, email us your report and we will guide you through component selection

Can I order the frameset on its own?

Yes. Bossi framesets can be purchased on their own, or as a complete bike as one of our Core Builds.

We employ industry standards in our frame designs ensuring wide compatibility with components and ease of assembly by any qualified mechanic.

What is included with the frameset?

Each frameset includes the frame, carbon fork, carbon seatpost, headset, expansion plug, alloy spacers, thru-axles and seatpost clamp.

What is the difference between a Core Build and Custom Project?

Core Builds are complete bikes with carefully considered specifications chosen to suit the intended character of the model.

Custom Projects offers a greater level of customisation for riders who want to curate their build in more detail, include non-standard finishes,

Are Bossi bikes built to order?

Yes. All complete bicycles are built to order here in Australia. Once your order is placed, we confirm sizing, specification and component availability before the build begins. Our current lead time on complete bikes is roughly 2-4 weeks.

How long will my order take?

Lead times vary depending on frame availability, selected components and current workshop scheduling. Framesets are typically instock and fulfilled within 48 hours, while complete bicycles require additional time for assembly, setup and final quality control. We will confirm the expected timeline after purchase. On average, complete bicycles are fulfilled within 2-4 weeks.

Can I customise the specification of a Core Build?

For Core build orders, you can select your preffered gearing, crank length, and cockpit size. For further customisation, please contact us and we can discuss the requirement of your custom project and quote accordingly.

Do you ship internationally?

Yes, we ship internationally. For more information on shipping rates, delivery timeframes, duties and taxes, please visit our Shipping page or get in touch before ordering.

SHIPPING

Can you help me choose the right build?

Yes. If you are deciding between frameset, Core Build or a more custom configuration, we are happy to help guide you based on your riding, fit requirements and budget. Contact us and we'll arrange a consultation.

Testimonials

I purchased a Grit and couldn't be happier with both the bike and the service.
From the moment I walked into Bossi Bicycles, I was met with exceptional care and expertise. James and Peter truly listen, providing a customer-centric approach that is both considered and attentive.The Grit is awesome to ride. Whether I'm riding on the road, tackling gravel trails, or embarking on long day rides and multi-day bike packing trips, it handles superbly. I have now ridden over 17,000 kilometers, and the bike has performed flawlessly throughout.
I highly recommend Bossi Bicycles for anyone in search of a high-quality bike and outstanding service. Their dedication to customer satisfaction and their passion for cycling shine through in every interaction.
Mike RSydney, NSW
Bought the Grit 4 years ago and I’m currently riding it multiple times a week. Must say it is an awesome bike. It feels great on gravel and very trustful at any speed. I’ve totally abandoned my other bike since owning this one.
Also, James and Peter did a great job of shipping it to Germany after I left Australia. Great service all in all.
MCochGER
Thoroughly satisfied with my first venture into the world of Bossi Titanium.
I’ve been enjoying my Grit for around six weeks now, with around 1,000km up so far. Its performance on the loose stuff is next level, with amazing agility, responsiveness and comfort, on top of that it has replaced my old roadie as a more than capable day to day commuter.
It’s not only the bike that excels, the team at Bossi is exceptional and adds a level of professionalism that other LBSs can’t match. When you’re ready for the next step up, I recommend taking a look at a Bossi.
John MSydney, AUS