Wilwood Forged Dynalite Caliper 120-13839 (Pair)
Suits: 0.81" wide rotors, 10.00" to 13.06" diameter, lug mount on 5.25" centres
Forged four-piston calipers for 0.81″ rotors. Lug mount on 5.25″ centres, sold as a pair.
- 4 stainless steel pistons, 3.00 in² piston area
- Forged aluminium body in aluminium, red or black
- Suits 0.75″ to 0.83″ rotors from 10.00″ to 13.06″ diameter
- The caliper in our 280mm MX-5 NA and NB brake kit
Why choose the Forged Dynalite
The Forged Dynalite 120-13839 is a four-piston Wilwood caliper with a forged aluminium body and a single split bridge, spacer-less design. Stress-flow forging keeps the metal’s grain structure intact rather than cutting through it, and there are no steps between the piston housing and the bridges. It’s the caliper we use in our 280mm front brake kit for MX-5 NA and NB.
No dust boots
Like most Wilwood race calipers, the Dynalite runs without piston dust boots. Pad changes are simple: clean away any debris, push the pistons back and fit the new pads.
Specifications
| Wilwood part number | 120-13839 |
|---|---|
| Model | Forged Dynalite |
| Sold as | Pair |
| Colours | Aluminium, red or black |
| Pistons | 4, stainless steel |
| Piston area | 3.00 in² |
| Dust boots | No |
| Rotor width | 0.81″ (0.75″ to 0.83″) |
| Rotor diameter | 10.00″ to 13.06″ |
| Pad area | 6.36 in² |
| Pad volume | 2.1 in³ |
| Body | Forged aluminium |
| Weight | 3.6 lb (Wilwood listed) |
| Mount type | Lug, universal side |
| Mount centres | 5.25″ |
| Mount hole size | 0.39″ |
| Mount height | 2.03″ |
| Inlet thread | 1/8-27 NPT |
Fitting
The caliper inlet is a 1/8-27 NPT thread. If your brake lines use metric fittings, fit our Wilwood caliper conversion fittings to convert the inlet to metric. On the MX-5 NA and NB, mount the calipers with our 280mm caliper adaptor brackets. Bed in new pads using the Wilwood brake pad guide.
We recommend installation by a licensed mechanic.
Pairs with
What's Included
-
2× Wilwood Forged Dynalite caliper 120-13839 (your choice of colour)
Customer Installs
Fits any car that meets the requirements
No vehicle list for this part. Check the requirements before ordering.
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.
Complete the kit
This part comes in these kits — everything you need in one order, at a kit price.
-
280mm Two-Piece Front Brake Kit for MX-5 NA & NB
Suits: Mazda MX-5 NA (1989-1998), NB (1998-2005)
$1,631.00 AUD
Pairs with
Parts other customers fitted with this one, filtered to the same vehicles.
-
324mm Front Brake Rotors for R33 & R34 GTR
Suits: Nissan Skyline R33 GTR, R34 GTR (minimum 17" wheels)
Price range: $399.00 through $749.00 AUD -
300mm Rear Brake Rotors for S13, S14 & S15
Suits: Nissan Silvia S13, 180SX, Silvia / 200SX S14, S15 (with HFM.Parts 300mm adapters, 16" wheels minimum)
$299.00 AUD -
340mm Rear Rotors for S/R Chassis & GTR
Suits: Nissan Silvia S13, S14, S15, 180SX, Skyline R32 GTS-T, R33 GTS-T, R34 GTT, R32 GTR, R33 GTR, R34 GTR (with HFM.Parts 340mm rear caliper adapters)
$399.00 AUD -
354mm Two-Piece Front Brake Kit for S/R Chassis (Kia Stinger Brembo)
Suits: Nissan Silvia S13, S14, S15, Skyline R32 GTS-T, R33 GTS-T, R34 GT with Kia Stinger Brembo 4-piston front calipers (minimum 18" wheels)
$988.00 AUD -
324mm Wilwood Front Brake Kit for 350Z & V35
Suits: Nissan 350Z Z33, Skyline V35, with or without factory Brembo calipers (17" wheels minimum)
$2,253.00 AUD -
280mm Two-Piece Front Brake Kit for MX-5 NA & NB
Suits: Mazda MX-5 NA (1989-1998), NB (1998-2005)
$1,631.00 AUD -
Rear Hard Line Delete Brake Lines for R32, R33, R34
Suits: Nissan Skyline R32 GTR, R32 GTS-T, R33 GTS-T, R34 GTT
$119.00 AUD -
Front Hard Line Delete Braided Brake Lines for R33 & R34 GTR
Suits: Nissan Skyline R33 GTR, R34 GTR (with the HFM.Parts 354mm front brake kit)
$119.00 AUD
Recommended for you
Other options in this range for the same vehicles.
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Wilwood Forged Superlite Caliper 120-11133 (Pair)
Suits: 1.25" wide rotors up to 13.06" diameter, lug mount on 3.50" centres
Price range: $825.00 through $1,099.00 AUD -
Wilwood Forged Superlite Caliper 120-11134 (Pair)
Suits: 0.81" wide rotors, 11.75" to 13.06" diameter, lug mount on 3.50" centres
Price range: $799.00 through $1,099.00 AUD
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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