Land Cruiser 300 Brake Upgrade: Measure Before You Order
Reviewed by the SteedLuxParts engineering team
Last updated September 21, 2026
Land Cruiser 300 brake upgrade for the J300 from 2021: 345/355/380 mm front rotor bands on 18–21 inch wheels, sized after the VIN and wheel measurements
Set price
Quantity pricing updates automatically
$518.00
/ set
1-9 sets
Wholesale tier pricing Lower pricing for larger orders
1-9 sets
Sample or retail orders
$518.00/ set
10-49 sets
Small wholesale batch Recommended
$488.00/ set
Save $30 per set
50-199 sets
Core dealer volume
$528.00/ set
Product details
2 calipers, 4 brake pads, 2 rotors, 2 custom caliper brackets and 2 brake lines, with one brake fluid bottle when it is specified for the selected configuration
Shipping and lead time
Ships to
United States
Shipping
from $10.00
Delivery
about 20-35 business days
Fitment information
We check OEM wheels with the vehicle year and VIN in our database. For aftermarket wheels, we also need ET, J, spoke, and inner-barrel details.
Warranty and returns
5 years against manufacturing/quality defects only View the full returns policy.
Product information
Product Details & Fitment
The application shown on this page is a reference configuration. It is not a universal-fit claim and it is not the only vehicle application we can review.
Fitment review required
Confirm the vehicle and wheel before production
We check OEM wheels with the vehicle year and VIN in our database. For aftermarket wheels, we also need ET, J, spoke, and inner-barrel details.
- Vehicle model and year
- VIN / chassis number
- Wheel size
- OEM or aftermarket wheel
- Front calipers, rear calipers, or front and rear kit
| Brand | steedluxparts | Category | Big Brake Kits |
|---|---|---|---|
| SKU | V6-LC300-FRONT-6P-CUSTOM | Minimum order quantity | 1 set |
| Compatible Vehicles | Land Cruiser 300 (J300 from 2021) enquiries; the record also reviews other platforms after a VIN and measurement check | Year Range | J300 from 2021 as published; the record leaves the range to be confirmed from the VIN and the original brake configuration |
| Supplementary Note | Trim, drive type and the factory front brake package are collected before the bracket and rotor plan is fixed | Brake Line / Interface Notes | Two brake lines per front set; the bracket and hose configuration is confirmed after the technical review |
| Front / Rear Axle | Front axle | Installation Type | Confirm before order |
| Additional Setup Required | Depends on the vehicle | Package Scope | Front axle kit |
| Brake Kit Notes | V6 Series six-piston custom front kit; the V6 Series is a product series name rather than an engine description, with 345, 355 or 380 mm rotor options after the fitment review | Included Brake Parts | 2 calipers, 4 brake pads, 2 rotors, 2 custom caliper brackets and 2 brake lines, with one brake fluid bottle when it is specified for the selected configuration |
| Warranty | 5 years against manufacturing/quality defects only | Packaging | Standard export packaging |
| Carton Size | 45 x 45 x 45 cm | Gross Weight | 45kg |
| MOQ | 1 set |
A brake upgrade is not a brake repair
Key takeaways
- Fix faults first: a soft pedal, a pull, a weeping hose or trapped air is a repair, and a six-piston caliper does not repair it.
- Measurements, not badges: the order starts with VIN, wheel width, offset, inner barrel and spoke detail.
- Preliminary bands: 18 inch pairs with 345 mm or 355 mm, 19 inch with 355 mm or 380 mm, and 20–21 inch with 380 mm until the wheel file says otherwise.
- Requested scope: 2 calipers, 4 pads, 2 rotors, 2 custom brackets and 2 brake lines, in a 45 x 45 x 45 cm carton at 45 kg.
This Land Cruiser 300 brake upgrade record is honest about something most big-brake pages skip: half the enquiries that arrive are really a brake fault wearing a performance hat. So we lead with diagnosis, then the measurement list, and only then the order. Nothing here is sold as a universal-fit claim.
V6 Series is a series name, not an engine
Two things get misread on this page, and the record settles both.
About the V6 label
The V6 Series is the name of a caliper family in this catalogue, not a description of your engine. Whether the vehicle in front of you runs a petrol V6 or a hybrid makes no difference, because the caliper is matched to the axle, the rotor and the wheel. If you arrived here checking your engine code, that was a detour.
About the “custom” label
Custom here means the bracket and the rotor interface are made to measurements, not that the buyer chooses a colour and waits. We ask for the inner barrel and spoke photos before rotor diameter is discussed at all, which is why the quotation reads like a build sheet rather than a shopping cart line.
The market shows the same caution. A big-brake kit for this chassis from another supplier is listed as available for 330 mm rotors and bigger only, and its catalogue spans 286 mm, 304 mm, 330 mm, 356 mm, 380 mm and 405 mm. Its rear kit calls for an electronic e-brake, so the two axles are quoted apart there as well.
The measurements that choose the rotor
Preliminary configurations only, exactly as the record labels them. Below 18 inch the table stops, and a 17 inch wheel is not on the record at all.
| Wheel | Preliminary band | Measure before approval |
|---|---|---|
| 18 inch | 345 mm or 355 mm | Inner barrel, spoke profile, width and offset |
| 19 inch | 355 mm or 380 mm | The same four numbers, plus hub and bracket position |
| 20 inch and 21 inch | 380 mm | Full envelope check with the tyre fitted |
Four numbers beat one diameter
Two wheels of one size can differ where it matters: barrel depth, spoke shape, width and offset. Add the original rotor dimensions and the mounting details, and the picture is complete enough to cut a bracket. It is the reason we ask for measurements instead of accepting a wheel size at face value.
The enquiry file, field by field
Five fields open the file. The record asks for all of them on every custom enquiry, whichever platform the kit ends up on.
| Control field | On the record now | Send with the enquiry |
|---|---|---|
| Page SKU | V6-LC300-FRONT-6P-CUSTOM | The quotation and packing list carry this reference |
| Vehicle identity | Land Cruiser 300 enquiry; year and trim not supplied | VIN, model year, trim and drive type |
| Axle request | Front axle package on this page | Confirm the front set, or ask for a rear solution separately |
| Factory brakes | Original rotor dimensions and mounting details required | Measured rotor size plus caliper photos |
| Wheel | 18–21 inch band with a clearance check | Diameter, width, offset and the inner-barrel photos |
On aftermarket wheels the record also asks for offset data, and the two numbers that come with it are ET – the distance from the mounting face to the wheel centre line, and J – the bead-profile code stamped into the rim. A factory wheel needs its diameter, and the VIN carries the rest.
The requested scope, line by line
Five named groups and one conditional line make up this scope: 2 calipers, 2 brackets, 4 pads, 2 rotors and 2 lines.
- Calipers: 2 six-piston front calipers, machined bracket pairing confirmed in the quotation.
- Pads: 4 brake pads, ceramic friction material on the site record.
- Rotors: 2 rotors, diameter and thickness fixed after the measurement review.
- Brackets: 2 custom caliper brackets, cut to the measured mounting points.
- Lines: 2 brake lines, routing and fittings confirmed with the bracket drawing.
- Fluid: 1 bottle when the selected configuration includes it.
What this scope is not
It is not a rear kit, not an OE replacement part and not a repair for a hydraulic fault. A rear solution is quoted as its own record, and on this chassis an electronic parking brake sits at the back, which is one more reason the two axles are priced apart. The 5-year defect cover is the one term that does not change with the axle.
Materials on file, and the claims this page will not make
The site material record lists 7050 aluminium alloy for the caliper body, hat and bracket, ceramic friction material for the pads and high-carbon cast iron for the discs. Those grades come from the site-wide record, and no batch sheet was written for this kit.
Four claims stay off the page. It promises no universal-fit, because the record refuses one. It does not present the set as an OE replacement. It publishes no stopping distance, fade or bias figure, because no brake test exists for this SKU. And it names no OEM part number, because none is held.
One more boundary belongs here rather than in a footnote. The old gallery carried a caliper cast with another marque’s name and a wheel from another marque’s car; both have been left out of the rebuilt image set and flagged for replacement, because a reference photo that shows a different brand is worse than no photo at all.
Sources checked for this record: the Wikipedia Land Cruiser entry for the J300 timeline, and the Wikipedia disc-brake entry for the caliper and disc terms. Neither proves fitment on a particular car. The fitment language on this page was reviewed by the SteedLuxParts fitment desk, and the page carries a 2026-09-22 revision date.
From RFQ to carton on a custom set
One vehicle
The RFQ arrives with the file above. The fitment desk checks the measurements against the bracket and rotor options, then the quotation goes out with the configuration written into it. A 30% deposit releases production, the build runs 3–7 business days, and delivery takes about 20–35 business days with the balance settled before dispatch.
Wholesale and retail
The live table prints USD 518 a set for 1–9 sets and USD 488 for 10–49 sets. Its third band reads USD 528 for 50–199 sets, which is higher than both smaller bands and reads like a data-entry slip; we have kept the two credible bands and left that one for the owner to correct. MOQ stays at 1 set, and packing is a 45 x 45 x 45 cm carton listed at 45 kg gross, weighed again before dispatch.
Questions that arrive before a J300 order
Will this fit every Land Cruiser 300?
No. A VIN starts the identification and does not finish it: wheel clearance, rotor dimensions, mounting details and brake hose data all have to line up before a custom front set is approved. The record makes no universal-fit or direct-fit claim, and neither does this page.
Is 18 inch enough for a 345 mm or 355 mm rotor?
Diameter alone is only a first screen. The inner barrel, spoke profile, wheel width, offset and a measured clearance figure decide whether the caliper body fits, and those numbers come from your wheel, not from the wheel size on a spec sheet.
Can a six-piston kit cure a soft pedal?
No, and this is worth saying plainly: a soft pedal can come from air in the system, an ABS bleed that was never completed, a damaged hose or a tired master cylinder. Diagnose the original brake first. Ordering a bigger caliper to chase a fault usually moves the fault rather than fixing it.
Are rotors, pads, brackets and lines included?
The requested scope carries 2 calipers, 4 brake pads, 2 rotors, 2 custom caliper brackets and 2 brake lines. The brake fluid bottle depends on the configuration selected, so the quotation confirms the rotor and hose set that leaves with the kit.
Can the V6 Series be fitted to another vehicle?
The series can be evaluated for other platforms when the same file arrives: VIN, wheel data, rotor measurements, mounting details and the requested axle. That is how the record describes it, and it is why the page asks for measurements rather than for a model list.
What should be sent before asking for a price?
VIN, vehicle year, trim and drive type, the axle you want, wheel diameter, width and offset, wheel photos including the inner barrel and spoke area, the original rotor dimensions, your target rotor size, hose details, destination and quantity. One complete message usually replaces three rounds of questions.
Photos, and the measurements to send first
Four pictures come from the seller’s kit family: a series overview, a boxed four-caliper layout, a purple caliper over a two-piece rotor, and one workshop frame with the wheel off. Three more are shared template images. None of the seven shows an LC300 with this set fitted, and two gallery files from the old page were dropped because they show another marque’s hardware.
The first message carries the measurements: VIN, year, trim and drive type, wheel diameter, width and offset, inner-barrel and spoke photos, the original rotor dimensions, the target rotor size for the 18–21 inch band, hose details, destination and quantity. The reply carries the rotor decision, the bracket schedule and the price.
Fitment resources before ordering
OE lookup, wheel size, packing, RFQ.
01
Buyer resource
OE lookup center.
Narrow the axle and brake package.
02 Buyer resource Buyer FAQ.Fitment, warranty, packing, quote answers.
03 Buyer resource Browse brake system products.Compare calipers and rotor kits.
04 Buyer resource Browse Toyota Big Brake Kit.Compare nearby variants first.
05 Buyer resource Shipping and claim support.Export packing and freight evidence.
06 Buyer resource Terms and claim rules.Approval, payment, shipping and return limits.
07 Buyer resource Request fitment review.Send model, year, VIN and wheel data.
08 Buyer resource Solutions and technical guide.Fitment, installation and packing checks.
09 Buyer resource Buyer application scenarios.Sourcing workflows for international buyers.
10 Buyer resource Wholesale and market support.Market routes and wholesale details.
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