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SLP-GT6-GS300-BBK-CUSTOM Brand: steedluxparts Fitment review required

Lexus GS300 Big Brake Kit GT6 6 Piston Calipers

Reviewed by the SteedLuxParts engineering team Last updated August 20, 2026
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Lexus GS300 big brake kit wheel clearance,Lexus GS300 GT6 six piston calipers,custom Lexus GS300 brake kit with rotors

Set price Quantity pricing updates automatically
$518.00 / set 1-9 sets
$888.00 10-49 sets $488.00 / set
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 $428.00/ set Save $90 per set
MOQ: 1 set Available to order
Product details

Calipers x2, brake pads x4, custom bell hats and brackets x2, brake hoses x2, brake discs x2, brake fluid x1 depending on product model

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.

VIN IDWHEELROTORAXLE
  • Vehicle model and year
  • VIN / chassis number
  • Wheel size
  • OEM or aftermarket wheel
  • Front calipers, rear calipers, or front and rear kit
BrandsteedluxpartsCategoryBig Brake Kits
SKUSLP-GT6-GS300-BBK-CUSTOMMinimum order quantity1 set
Compatible VehiclesLexus GS300 and compatible Lexus models after VIN based fitment checkYear RangeConfirm by VIN, not fixed without vehicle data
Supplementary NoteGT6 six piston front big brake kit with custom bell hat and bracketRear Parking Brake TypeLED Projector
Brake Line / Interface NotesBrake hoses included, hose interface must be checked by VIN, professional installation requiredInstallation TypeConfirm before order
Additional Setup RequiredDepends on the vehicleBrake Kit NotesGT6 six piston calipers with 345, 355, 380 and 405 mm rotor options based on wheel size
Included Brake PartsCalipers x2, brake pads x4, custom bell hats and brackets x2, brake hoses x2, brake discs x2, brake fluid x1 depending on product modelWarranty5 years against manufacturing/quality defects only
PackagingStandard export packagingCarton Size45 x 45 x 45 cm
Gross Weight45 kgMOQ1 set

The Lexus GS300 Big Brake Kit is built for buyers who want a GT6 six piston brake caliper set but do not want to guess on fitment, wheel clearance, rotor size, or bracket position, this kit is quoted after checking the VIN, wheel size, current brake disc size, wheel photos, and brake position, so importers, workshops, tuning shops, and fleet buyers can avoid the common problem of ordering a large caliper package that touches the wheel spokes or arrives with the wrong mounting hardware

Lexus GS300 Big Brake Kit GT6 six piston calipers with rotors and brackets

Lexus GS300 Big Brake Kit GT6 six piston calipers with rotors and brackets

GT6 six piston brake caliper kit for Lexus GS300 custom VIN fitment

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Lexus GS300 Big Brake Kit Fitment First

A big brake kit is not confirmed by wheel diameter alone, buyers in the United States, Europe, Africa, Kenya, South Africa, Ukraine, Kazakhstan, and Russian speaking markets often search for a larger Lexus brake caliper kit after seeing a forum build or an install video, but the real purchase decision usually depends on clearance, rotor pairing, hose position, bracket design, and whether the vehicle is a daily driver, a performance build, a repair project, or a wholesale resale order, our quotation process starts with fitment proof instead of a generic claim

Key Benefits for Workshops and Import Buyers

  • GT6 six piston front caliper setup for Lexus GS300 focused upgrade inquiries and custom brake kit sourcing
  • Rotor options matched to wheel size, 18 inch wheels use 345 or 355 mm rotors, 19 inch wheels use 355 or 380 mm rotors, 20 inch wheels use 380 or 405 mm rotors, 21 inch wheels use 405 mm rotors
  • VIN based fitment review before order confirmation, useful for markets where Lexus model year, trim, imported version, and brake package can vary
  • Custom caliper color, logo, bell hat, bracket, and package scope can be discussed after the buyer sends the required vehicle and wheel details
  • Complete set structure for buyers who need more than loose calipers, including calipers, brake pads, custom bell hats and brackets, brake hoses, brake discs, and brake fluid depending on model
  • MOQ starts from one set, suitable for a sample order, workshop install test, or importer market check before larger wholesale purchasing
  • Standard export packing and 10 to 25 day production or preparation lead time after fitment and order details are confirmed

Specifications

Product typeGT6 six piston big brake caliper kit
Target keyword modelLexus GS300, final compatibility confirmed by VIN and brake details
Wheel and rotor match18 inch 345 or 355 mm, 19 inch 355 or 380 mm, 20 inch 380 or 405 mm, 21 inch 405 mm
Fitment methodVIN, wheel size, rotor size, wheel clearance, and brake photos checked before quotation
Included partsCalipers x2, brake pads x4, custom bell hats and brackets x2, brake hoses x2, brake discs x2, brake fluid x1 depending on product model
MOQOne set
Lead time10 to 25 days after confirmation
Warranty12 months
PackingStandard export packing, carton size 45 x 45 x 45 cm, gross weight 45 kg

Fitment Note Before Ordering

Please send the VIN or chassis number, wheel size, current front rotor diameter, wheel offset if available, spoke and inner barrel photos, current brake caliper photos, destination country, and order quantity, if the car uses a swapped hub, aftermarket wheels, a previous brake conversion, or a non standard rotor, mention it before quotation, this helps us check the caliper body, bell hat, bracket, brake hose, and rotor package before production or shipment

Some builds may need extra clearance checks, a different wheel design, longer hardware, dust shield trimming, or professional installer judgement, wheel spacers are not recommended as a default answer because spacer use depends on wheel offset, spoke design, stud or bolt length, fender clearance, and local safety rules, this is why the page asks for measurements before a price is finalized

Wholesale and Export Information

For B2B buyers, the most useful inquiry is not only a product name, send a model list, planned quantity, wheel and rotor sizes, target market, packaging request, and whether you sell to repair shops, tuning shops, fleet operators, or retail drivers, buyers in Kenya, South Africa, Ukraine, Kazakhstan, Russia, Europe, and North America often need clear fitment confirmation before paying for imported brake kits, we can prepare the quote around the confirmed set content, sample order needs, and standard export packing

Buyer questions

Product FAQ

Fitment, axle, packing and claim questions.

Will this kit fit my Lexus GS300

It may fit after confirmation, but it should not be treated as a blind universal bolt on item, send VIN, wheel size, rotor size, brake photos, and wheel photos before ordering

Why do you need my VIN

The VIN helps identify market version, production details, brake configuration, and possible trim differences that can affect bracket, hose, rotor, and caliper fitment

Is rotor diameter enough to confirm a brake caliper kit

No, rotor diameter is only one part of the check, wheel spoke clearance, inner barrel shape, offset, bracket position, and hose route also decide whether the kit can be installed cleanly

Do I need wheel spacers

Maybe, but not by default, some wheels clear large calipers without spacers and some do not, send wheel photos and measurements first so the installer can review the clearance risk

Can I order one set before buying wholesale

Yes, MOQ is one set, many importers and workshops use a sample order to check fitment, packaging, installation process, and local buyer response before repeating orders

What should I confirm before installation

Confirm rotor direction, bracket mounting, hose route, wheel clearance, bolt torque, fluid bleeding, pad bedding, and any local inspection requirement with a professional installer

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