324mm Front Brake Upgrade Kit for R34 GTT
Suits: Nissan Skyline R34 GTT with factory calipers (minimum 17" wheels)
Bigger front rotors on your factory calipers. Everything you need to step your R34 GTT up from 310mm to 324mm.
- 324mm front rotors plus caliper adaptor brackets and M14 bolt kit
- Choose single-piece or lighter two-piece rotors
- Keeps your factory R34 GTT calipers
- Needs 17″ wheels and minor caliper linishing
$608.00 AUD
Inclusions
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324mm Front Rotor Caliper Adaptor Brackets - R34 GTT (324mm)
In stock
R34324
$209.00 AUD
Requirements
Why upgrade
The R34 GTT runs 310mm front rotors. This kit steps you up to 324mm and keeps your factory calipers. It’s an affordable big brake upgrade: more rotor for better heat dissipation and braking, with no new calipers to buy.
What’s in the kit
324mm front rotors (pair). Choose single-piece, or two-piece to save weight.
Single-piece rotors have a clean, slotted face. The slots have a slight curve to help keep the pad surface clean and improve ventilation. The hub is painted black for rust resistance.
Two-piece rotors weigh 7.4kg each, 1.5kg less per corner than our 8.9kg single-piece rotors. The ring is free to expand and contract as it heats and cools, and the centre hat is heat-treated T6-6061 aluminium.
Caliper adaptor brackets (pair). T6-6061 hard anodised billet aluminium with stainless steel Heli-Coils, supplied with an M14 bolt kit. They space your calipers out to suit the larger rotor.
Ready to fit
Single-piece: Every rotor is runout tested and balanced before it leaves us, so it’s a direct bolt-on straight out of the box.
Two-piece: Two-piece rotors arrive with the hat and ring already bolted together, runout tested and balanced as an assembly. Always check the hat bolts are at 13–15 ft-lb before fitting, as you would with any two-piece rotor. Otherwise, it’s a direct bolt-on.
Will it fit my car?
These suit the Nissan Skyline R34 GTT with its factory front calipers: the ones used with the factory 310mm rotors, with M14 caliper bolt holes. You’ll need 17″ wheels or larger.
Fitted correctly, the bracket sits close to the lower control arm. With the factory steering lock there’s no interference. We can’t confirm fitment with aftermarket parts that change the steering angle.
Specifications
| Rotor diameter | 324mm (factory 310mm) |
|---|---|
| Rotor thickness | 30mm |
| Minimum thickness | 28mm |
| Rotor height | 53.8mm |
| Centre bore | 68mm |
| Stud holes | 5 |
| Rotor weight | 8.9kg single-piece, 7.4kg two-piece (per rotor) |
| Directional | No, fits either side |
| Calipers | Factory R34 GTT (M14 caliper bolt holes) |
| Bracket material | T6-6061 billet aluminium, hard anodised |
| Bracket threads | Stainless steel Heli-Coils |
| Bolt kit | M14 x 1.5 bolts and washers, supplied |
| Bracket and caliper bolt torque | 60–70 ft-lb (81–95Nm) |
| Thread sealant | Loctite 262 or similar |
| Wheel size | 17″ minimum |
| Sold as | Front kit (pair of rotors and pair of brackets) |
Fitting
Test fit the caliper on the bracket without the rotor, with the bolts hand tight. Where the caliper touches the knuckle it leaves small marks. Remove the caliper and linish those spots so it clears. Use a good quality thread sealant such as Loctite 262 on all bolts, and torque them to 60–70 ft-lb (81–95Nm). Brackets are marked R34324-L and R34324-R.
The factory brake line bracket can’t be used with the adaptors. Remove it and refit one of its M8 bolts in its place. The factory brake lines will likely be at full stretch, so we recommend longer braided lines.
Step-by-step photos are in our R34 GTT 324mm adaptor bracket install guide.
Rotors are non-directional, so either rotor can go on either side. On two-piece rotors, check the hat bolts are at 13–15 ft-lb before fitting.
We recommend installation by a licensed mechanic.
Pairs with
DIMENSIONS.
Diameter 324 mm
Height 53.8 mm
Thickness 30 mm
Minimum Thickness 28 mm
Centre Hole 68 mm
Stud Holes 5
Weight 7.4kg/rotor
REPLACEMENTS
We stand by our products. You can purchase replacement HFM.Parts 324mm Rotors without the adapters for a great price, ready when you need them.
ADDITIONAL NOTES.
(Optional) To get the most out of this kit we recommend you replace the standard brake pads with DB1346 or equivalent brake pads.
What's Included
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2× 324mm front brake rotor (single-piece or two-piece, as selected)
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2× Caliper adaptor bracket (L and R)
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2× M14 x 1.5 x 30mm hex head bolt
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2× M14 x 1.5 x 30mm cap head bolt
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4× M14 x 1.5 x 45mm hex head bolt
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6× M14 washer (28mm x 2.5mm)
Customer Installs
Installs of this part — and similar parts in this category.
Factory R34 GTT front calipers (310mm rotor, M14 caliper bolt holes)
Minor linishing of the caliper required
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Our compatibility list is based on OEM specifications. Variations may exist due to vehicle sub-models or other factors — verify fitment before purchasing.
Our Story
We weren't always HFM.Parts; we were Holford Motors. Our brand's identity was forged not in an office, but on the local circuits in the high-stress world of competitive drifting. Our ultimate testbed was our Nissan S14 Drift car, driven by champion Luke Fink. Pushing that car to its limits exposed a crucial truth: achieving genuine, repeatable performance meant relying on components that simply weren't available affordably on the market.
The HFM.Parts brand was born
We made the commitment to design and manufacture the uncompromising, high-quality performance parts that we, as competitive racers, demanded ourselves. Every component you see is a solution conceived, tested, and proven by us. When you choose HFM.Parts, you are investing in components engineered by racers, for racers, ensuring your vehicle delivers its maximum performance potential.
Modifying vehicles is a specialist task and requires the knowledge and experience of competent
individuals to
be conducted safely.
We recommend this product be installed by a competent person. Instructions are given with every
order
where
available, however, If you would like a copy prior to ordering, you're welcome to contact us
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