Steel & Aluminium Gravel Builds Melbourne | NWHBIKES

Now taking reservations

Your next gravel build starts here.

Steel and aluminium framesets for gravel, touring and bikepacking, plus custom builds and frame swaps. Our first CX03 and GA04 frames are on their way to Melbourne.

Frames by WEAPON. Builds supplied, assembled and supported by NWHBIKES.

Discuss your build Explore the frames

WEAPON CX03 chromoly steel gravel frameset in Steel — CX03 · Steel

WEAPON GA04 aluminium gravel frameset in Raw Polish — GA04 · Raw Polish

Two frames, your direction

Choose the material. Plan the bike around your riding.

Our first WEAPON gravel frames are incoming. Frameset pricing is confirmed below. Reserve with a 20% deposit plus shipping, then pay the remaining 80% when your frame arrives at NWHBIKES.

First frames incoming

WEAPON

CX03

Chromoly steel

A chromoly steel starting point for gravel, touring and bikepacking, built around your routes, component preferences and budget.

$1,199 AUD

Reserve with $239.80 + shipping today. The remaining 80% is invoiced when the frameset arrives at NWHBIKES.

View CX03 & reserve

Manufacturer specifications

Heat-treated, triple-butted chromoly frame
Chromoly fork
Threaded BSA 68 mm bottom bracket
Flat mount disc brakes
Thru-axle wheel mounting

Final build details to be confirmed with NWHBIKES.

First frames incoming

WEAPON

GA04

Aluminium · Raw Polish

A modern aluminium option with a carbon fork for gravel, bikepacking and long-distance adventure, built around your own riding and component choices.

$999 AUD

Reserve with $199.80 + shipping today. The remaining 80% is invoiced when the frameset arrives at NWHBIKES.

View GA04 & reserve

Manufacturer specifications

6061 aluminium frame
T700 carbon fork
Threaded BSA 68 mm bottom bracket
Flat mount disc brakes
Thru-axle wheel mounting

Final build details to be confirmed with NWHBIKES.

Geometry & sizing

Compare the CX03 and GA04 before choosing your frame.

Manufacturer geometry and recommended rider-height ranges are shown below. Use them as a starting point rather than a substitute for fit advice, especially if you sit between sizes.

WEAPON CX03Chromoly steel · XS–XLView geometry

WEAPON CX03 geometry and size chart for gravel frame

CX03 size guide

The CX03 is offered in manufacturer sizes XS (44) through XL (56). Rider-height ranges overlap, so two sizes may be worth discussing depending on your proportions, current bike and preferred riding position.

WEAPON CX03 manufacturer geometry — measurements in mm unless noted.
Size	Seat tube A	Effective top tube B	Head tube C	BB drop D	Chain stay E	Wheelbase F	Reach G	Stack H	Head angle L1	Seat angle L2	Recommended rider height
XS (44)	44	515	90	70	425	999	369	546	71.5°	74.5°	150–160 cm
S (47)	47	527	110	70	425	1001	372	558	71.5°	74.5°	158–168 cm
M (50)	50	535	140	72	425	1005	376	570	72°	74.5°	168–178 cm
L (53)	53	549	170	72	425	1014	380	589	72°	74°	178–188 cm
XL (56)	56	564	200	72	425	1025	409	602	73.5°	75.5°	187–200 cm

WEAPON GA046061 aluminium · XS–XXL · Raw PolishView geometry

WEAPON GA04 geometry and size chart for gravel frame

GA04 size guide

The GA04 is offered in manufacturer sizes XS (44) through XXL (59). Its rider-height ranges overlap, so fit should also be considered alongside reach, stack and the position you want from the finished bike.

WEAPON GA04 manufacturer geometry — measurements in mm unless noted.
Size	Seat tube A	Effective top tube B	Head tube C	BB drop D	Chain stay E	Wheelbase F	Reach G	Stack H	Head angle L1	Seat angle L2	Standover K	Recommended rider height
XS (44)	44	513	115	70	425	1006	365	533	70°	74.5°	738	150–160 cm
S (47)	47	527	130	70	425	1011	373	551	71°	74.5°	759	158–170 cm
M (50)	50	542	145	70	425	1018	380	567	71.5°	74.5°	784	168–178 cm
L (53)	53	559	160	70	425	1029	390	583	72°	74°	807	176–186 cm
XL (56)	56	570	175	70	425	1041	398	597	72°	74°	831	184–195 cm
XXL (59)	59	580	190	70	425	1052	405	612	72°	74°	856	193–210 cm

Three ways to plan your bike

Start with the level of help you need.

Frameset pricing is fixed. Frame swaps and complete builds are quoted around your components, compatibility, riding and the work required.

Frameset

Buy the CX03 for $1,199 AUD or the GA04 for $999 AUD. Reserve your chosen size and colour with a 20% deposit plus shipping, with the remaining 80% invoiced when the frame arrives.

Frame swap

Discuss moving suitable components from your existing bike, subject to inspection, condition and compatibility.

Complete build

Plan a gravel bike around your riding, preferred components and approximate budget.

Built with a mechanic

A build you can discuss with the person assembling it.

Work directly with Julian at the NWHBIKES appointment-only Melbourne workshop. The focus is practical component selection, careful assembly and ongoing servicing after the bike is built.

Elitewheels can be discussed as an optional wheel choice where they suit the intended riding and component compatibility. They are not included by default.

Talk through your build →

Follow the first builds

We’ll show the process as the first two bikes come together.

When the CX03 and GA04 arrive, we’ll share their arrival, assembly, component choices and riding impressions. The first content will document the real bikes as they are built.

Gravel enquiry

Tell us about your next gravel bike.

Not ready to reserve yet? Send the basics and we’ll help with sizing, compatibility or build planning. Reservations are completed from each model’s product page; this enquiry form does not charge you.

Email
info@nwhbikes.com

Phone
0412 654 041

FAQ

Before you reserve or enquire.

When will the frames be available?

Reservations are open for incoming frames. Current expected availability is approximately 30 days from order, but supplier availability and freight can change the ETA.

Can I reuse components from my existing bike?

Possibly. A frame swap depends on compatibility and the condition of the parts you want to reuse.

How much do the framesets cost?

The WEAPON CX03 is $1,199 AUD incl. GST and the WEAPON GA04 is $999 AUD incl. GST. Frame swaps, complete builds, parts and any additional workshop work are quoted separately.

How does the 20% reservation work?

Select your size and colour on the model’s product page. You pay 20% of the frameset price plus shipping at checkout: $239.80 for the CX03 or $199.80 for the GA04. The remaining 80% is invoiced when your frameset arrives at NWHBIKES. If you cancel, 50% of the deposit is refundable. If NWHBIKES cannot supply the ordered size or colour, the deposit is refunded in full.

Where is NWHBIKES?

NWHBIKES operates as an appointment-only bicycle workshop in Melbourne.

What size should I choose?