BMW F30 Big Brake Kit | M Sport Package Fitment Review
Reviewed by the SteedLuxParts engineering team
Last updated August 25, 2026
Front six-piston BMW F30 big brake kit with 18-21 inch wheel planning. Confirm year, original brake package, wheel type, ET and J before fitment and ordering.
Unit price
Quantity pricing updates automatically
$458.00
/ unit
1-9 units
Wholesale tier pricing Lower pricing for larger orders
1-9 units
Sample or retail orders
$458.00/ unit
10-49 units
Small wholesale batch Recommended
$390.00/ unit
Save $68 per unit
50-199 units
Core dealer volume
$360.00/ unit
Save $98 per unit
Product details
Front six-piston BMW F30 big brake kit with 18-21 inch wheel planning. Confirm year, original brake package, wheel type, ET and J before fitment and ordering.
Shipping and lead time
Ships to
United States
Shipping
from $50.00
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
Warranty terms are confirmed with the order. 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 | SLP-BMWF30-BBK-GT6-6P-F-KIT | Minimum order quantity | 1 unit |
| Original Vehicle Setup | Standard factory setup | Market / Side / Direction | LHD / left-side market |
| Installation Type | Direct replacement | Additional Setup Required | No extra setup |
| Sold As | Left only | Packaging | Standard export packaging |
| MOQ | 1 unit |
Which Original Brake Package Is Installed on the BMW F30?
This BMW F30 big brake kit is a GT6 front six-piston package planned for 18-21 inch wheels. The first fitment decision is not the rotor diameter. It is identifying whether the vehicle has standard brakes, an M Sport brake package or another original front-brake configuration, because that record affects bracket and rotor-interface review.
M Sport exterior trim, badges, wheel styling or seller descriptions do not by themselves prove which front brakes are installed. Provide the exact year, version, market and VIN privately, together with clear original-brake information. After that vehicle record is established, review the selected rotor and six-piston caliper inside the actual OEM or aftermarket wheel.
Approval order: identify the original front-brake package, approve the vehicle-specific bracket and rotor interface, then verify the complete wheel envelope. Incorrect vehicle data can produce a bracket mismatch, while unsuitable wheel geometry can prevent caliper clearance.
Four Fitment Checks Before Order
Vehicle record
Provide exact production year, version, market and VIN for private review. Do not infer fitment from the F30 body code alone.
Original brake package
Confirm standard, M Sport or another installed front-brake package with caliper, rotor and mounting information.
Wheel status
State OEM / ORIGINAL WHEEL or AFTERMARKET WHEEL and provide the actual 18, 19, 20 or 21 inch size.
Wheel geometry
For aftermarket wheels, provide ET and J values. Spoke profile and inner-barrel clearance must also be reviewed.
Solution Summary – At a Glance
Target application
BMW F30 subject to exact vehicle and original-front-brake approval.
Product
GT6 complete front package with two six-piston calipers.
Rotor planning
345, 355, 362, 380 and 405 mm references across 18-21 inch wheels.
Package scope
Calipers, adapter brackets, rotors, brake pads and hoses in stated quantities.
Product Configuration Paths
| Configuration path | Current scope | Release condition |
|---|---|---|
| Standard-brake F30 | Complete GT6 front six-piston kit. | Approve exact vehicle, original brake interfaces, rotor path and wheel envelope. |
| M Sport brake F30 | Separate original-package record under the same conditional page scope. | Verify installed hardware rather than relying on trim name, badge or appearance. |
| OEM wheel path | Use the exact original wheel specification and selected rotor reference. | Template or physical clearance review remains required. |
| Aftermarket wheel path | Use diameter, ET, J, spoke and inner-barrel information. | Approve the complete geometry with the planned caliper and rotor position. |
Configuration Specification Summary
| Item | Supplied information | Confirmation required |
|---|---|---|
| Product identity | GT6, as supplied in the product brief. | Use the page SKU and formal quotation for the approved seller description. |
| Caliper layout | Front axle, six pistons per caliper, two calipers. | Confirm approved bracket, pad and hydraulic interfaces. |
| Wheel range | 18-21 inch planning references. | Confirm wheel status, aftermarket ET/J and actual clearance. |
| Rotor plan | 18 inch: 345/355 mm; 19 inch: 362/380 mm; 20 inch: 380/405 mm; 21 inch: 405 mm. | Confirm remaining rotor dimensions and mounting interfaces. |
| Kit contents | 2 calipers, 2 brackets, 2 rotors, 4 pads and 2 hoses. | Match quotation and packing list to the page SKU. |
Wheel and Brake Disc Selection Matrix
Planning reference only. Wheel diameter does not confirm caliper clearance, and an M Sport description does not confirm the installed brake package. Final approval requires the exact vehicle, original brakes, wheel status, aftermarket ET/J values, spoke shape, inner barrel and complete rotor interface.
| Wheel reference | Rotor planning reference | Checks before approval |
|---|---|---|
| 18 inch | 345 mm or 355 mm | Original brake package, bracket interface, spoke clearance and inner barrel. |
| 19 inch | 362 mm or 380 mm | Actual wheel geometry, rotor interface and approved caliper template. |
| 20 inch | 380 mm or 405 mm | ET/J for aftermarket wheels, spoke profile, inner barrel and rotor position. |
| 21 inch | 405 mm | Complete wheel envelope, rotor interface, hose route and installation review. |
How Buyers Misapply the Matrix
Treating M Sport styling as brake-package proof
A vehicle may be described or presented as M Sport without giving enough information to release a bracket. The installed front caliper, rotor and mounting record must be checked. The visual package is not a substitute for the exact year, version, market and private VIN review.
Selecting the largest rotor listed for the wheel
An 18-inch wheel does not automatically accept 355 mm, and a 20-inch wheel does not automatically accept 405 mm. Rotor thickness, hat height, offset and mounting details must agree with the approved bracket and caliper position, while the wheel must clear the final assembly.
Risk note: incorrect year or original-brake information may result in a bracket that does not install. Unsuitable ET, J, spoke or inner-barrel geometry may leave insufficient caliper clearance.
Model and Specification Confirmation
| Control field | Current record | Order action |
|---|---|---|
| Page SKU | SLP-BMWF30-BBK-GT6-6P-F-KIT | Keep this reference consistent across enquiry, quotation and packing record. |
| Vehicle identity | BMW F30 target family; exact vehicle not yet supplied. | Provide exact year, version, market and VIN privately. |
| Original brakes | Standard, M Sport or other package not yet supplied. | Provide original front caliper, rotor and mounting information. |
| Wheel specification | 18-21 inch planning range; wheel status not supplied. | State OEM or aftermarket and provide required geometry. |
| Rotor interface | Diameter options supplied; other dimensions not supplied. | Approve thickness, hat height, offset, center bore and mounting details. |
Material and Manufacturing Confirmation
Material grade, caliper construction, manufacturing process, finish system, rotor metallurgy, testing, certification and performance results were not supplied. Any such claim must come from the approved specification, drawing and formal quotation. This page does not infer forged construction, CNC production, racing certification, road legality or a guaranteed stopping-distance improvement.
GT6 remains the buyer-supplied product-series name rather than an SEO performance claim. Product markings, colors and labels must be checked against approved seller documentation before resale or installation. No unrelated third-party brand identity is assigned to the kit from a requested keyword alone.
Component Interface Engineering
| Component | Quantity | Interface review |
|---|---|---|
| Front six-piston caliper | 2 | Caliper position, rotor centerline, pad path and wheel clearance. |
| Adapter bracket | 2 | Original brake package, mounting points and approved fasteners. |
| Brake rotor | 2 | Diameter plus thickness, hat height, offset, center bore and mounting data. |
| Brake pad | 4 | Pad shape and specification matched to supplied calipers and rotors. |
| Brake hose | 2 | Fitting type, routing, full steering travel and suspension movement. |
A qualified installer should review the approved installation information and verify fasteners, rotor runout, hose movement, wheel clearance and pedal operation. The listed component count defines the proposed package scope; it does not establish identical interfaces across every F30 year or brake package.
Complete Matched Kit vs Calipers Only
Complete GT6 front kit
The current page covers calipers, brackets, rotors, pads and hoses under one vehicle, original-brake and wheel approval record. This lets the major interfaces be reviewed together before the formal quotation is released.
Calipers-only request
A calipers-only enquiry is a separate configuration. The buyer or workshop must control rotor, bracket, pad, hose and mounting compatibility. Do not transfer the 345-405 mm package assumptions into a calipers-only order without a new interface review.
Buyer and Supply Scenarios
Retail customer
Submit the exact vehicle, brake and wheel record, then use a qualified workshop for installation.
Modification shop
Identify the original brake package before choosing the bracket and scheduling installation.
Distributor
Use the page SKU and approval record to keep standard and M Sport brake enquiries distinct.
B2B buyer
Provide quantity, destination market and fitment data; use the formal quotation for commercial terms.
Procurement Specifics
| Procurement field | Current page information |
|---|---|
| Package contents | 2 calipers, 2 adapter brackets, 2 rotors, 4 brake pads and 2 brake hoses. |
| Carton size | 45 x 45 x 45 cm. |
| Gross weight | 45 kg. |
| MOQ | Use the formal quotation for current commercial terms. |
| Lead time | Use the formal quotation for current commercial terms. |
| Warranty | Use the formal quotation or approved warranty document for current terms. |
The supplied carton size and gross weight are procurement references to be matched with the final packing list. They do not establish freight cost, shipping method, customs treatment or delivery time.
Common Fitment Questions
Is this kit automatically suitable for every BMW F30?
No. Exact year, version, market, original front brakes, bracket interface and wheel clearance require approval before ordering.
Does an M Sport badge confirm the installed brake package?
No. Record the actual original front caliper, rotor and mounting information. Styling or trim descriptions alone are insufficient.
Does an 18-inch wheel guarantee clearance for 345 or 355 mm rotors?
No. Spoke profile, inner barrel, width, offset, rotor interface and the approved caliper template still need review.
Should a 20-inch wheel use a 380 or 405 mm rotor?
Both are planning references. The approved vehicle, bracket, rotor interface and wheel envelope determine the final path.
What is required for an aftermarket wheel?
Provide wheel diameter, ET and J values, plus spoke and inner-barrel information where requested. A template or physical measurement may also be required.
Does the package include rear brake parts?
No. The supplied scope is a complete front six-piston kit. Rear calipers, rotors and parking-brake components are not listed.
What must be submitted before ordering?
Provide exact year, version, market, VIN privately, original front brakes, wheel size and status, and aftermarket wheel geometry where applicable.
Documentation and Order Confirmation
Before production or shipment, match the enquiry and formal quotation to page SKU SLP-BMWF30-BBK-GT6-6P-F-KIT. Confirm the exact BMW F30 vehicle record, standard or M Sport original front-brake package, chosen rotor path, wheel status, aftermarket ET/J data where applicable, component quantities, hose interfaces, packaging and current commercial terms.
Keep the complete VIN in the private approval workflow rather than public page content. Installation should begin only after the buyer and qualified installer have reviewed the approved bracket, rotor, wheel-clearance and hydraulic information.
Fitment resources before ordering
Use these internal guides to prepare fitment checks, variant confirmation, packaging notes, and RFQ details before approving a wholesale order.
01
Buyer resource
Solutions and technical guide.
Fitment checks, variant confirmation, installation notes, packaging evidence, and claim checklist.
02 Buyer resource Buyer application scenarios.Representative sourcing workflows for Africa, Europe, Ukraine, Kenya, South Africa, and Kazakhstan buyers.
03 Buyer resource Browse all automotive parts.Compare related parts in the catalog.
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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 vehicle year, trim, side or position, OE or reference number, quantity, and destination market.
08 Buyer resource Wholesale and market support.Market routes and wholesale details.
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