BMW G30 Brake Calipers | GT6 Front Kit Fitment Review
Reviewed by the SteedLuxParts engineering team
Last updated August 30, 2026
BMW G30 brake calipers for a GT6 front kit with 18-21 inch wheel planning. Confirm year, original brakes, wheel status, ET/J and rotor size before ordering.
Unit price
Quantity pricing updates automatically
$418.00
/ unit
1-9 units
Wholesale tier pricing Lower pricing for larger orders
1-9 units
Sample or retail orders
$418.00/ unit
10-49 units
Small wholesale batch Recommended
$380.00/ unit
Save $38 per unit
50-199 units
Core dealer volume
$350.00/ unit
Save $68 per unit
Product details
BMW G30 brake calipers for a GT6 front kit with 18-21 inch wheel planning. Confirm year, original brakes, wheel status, ET/J and rotor size before 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-BMWG30-BC-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 BMW G30 Front Brake Record Are You Replacing?
This BMW G30 brake caliper page is built for buyers searching BMW G30 brake calipers, BMW G30 front brake calipers and BMW G30 big brake kit. It covers a GT6 front six-piston complete kit planned for 18-21 inch wheels. The G30 model code alone does not release fitment. Exact year, variant, market and original front brakes must be checked before a bracket or rotor path is approved.
The page also fits buyers comparing BMW G30 brake kit with rotors, BMW G30 six-piston brake kit and BMW G30 brake caliper upgrade. Those phrases describe a product-selection task. They do not prove that every G30 version shares the same bracket, hose, rotor centerline or wheel-clearance result.
Front axle only: if rear scope is later discussed, confirm whether the rear calipers are EPB or mechanical and, if mechanical, whether the rear disc uses a drum-in-hat handbrake.
Four Fitment Checks Before Order
Vehicle record
Provide exact production year, variant, market and VIN for private review. Incorrect year or variant data can produce a bracket that does not install.
Original front brakes
Record the original front caliper, rotor and mounting information. This controls the vehicle-specific bracket and rotor interface review.
Wheel status
State OEM / ORIGINAL WHEEL or AFTERMARKET WHEEL and provide the actual 18, 19, 20 or 21 inch size.
Aftermarket geometry
For aftermarket wheels, provide ET and J values plus spoke and inner-barrel information where requested for clearance review.
Solution Summary – At a Glance
Target application
BMW G30 sedan family subject to exact vehicle and original-front-brake approval.
Product
GT6 complete front package with two six-piston calipers.
Rotor planning
18 inch: 345/355 mm; 19 inch: 362/380 mm; 20 inch: 380/405 mm; 21 inch: 405 mm.
Package scope
Calipers, adapter brackets, rotors, brake pads and hoses in the stated quantities.
The GT6 name is the buyer-supplied product identity for this page. Material grade, finish, logo, testing and manufacturing claims require approved seller documentation and are not inferred from the series name.
Product Configuration Paths
| Configuration path | Current scope | Release condition |
|---|---|---|
| G30 front-brake record | Conditional complete front six-piston kit review. | Approve exact year, variant, original interfaces, rotor path and wheel clearance. |
| Original brake package | Standard, M Sport or other installed package must be checked separately. | Do not transfer a different G30 brake package into this page without review. |
| OEM wheel path | Use the exact original wheel specification with the selected rotor reference. | Template or physical clearance review remains required. |
| Aftermarket wheel path | Use wheel diameter, ET, J, spoke and inner-barrel information. | Approve the complete geometry with the planned caliper and rotor position. |
Recent public buyer discussions around G30 fitment still treat wheel clearance as a separate approval step, especially when larger brake packages are involved. This page keeps that decision separate from the model code itself.
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 range. | 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 thickness, hat height, offset, center bore and mounting details. |
| Kit contents | 2 calipers, 2 brackets, 2 rotors, 4 pads and 2 hoses. | Match the quotation and packing list to the page SKU. |
Wheel and Brake Disc Selection Matrix
Planning reference only. Wheel diameter does not confirm caliper clearance. Final approval requires the exact G30 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 interface, spoke clearance, inner barrel and approved caliper template. |
| 19 inch | 362 mm or 380 mm | Actual wheel geometry, rotor interface and the approved bracket position. |
| 20 inch | 380 mm or 405 mm | ET and 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
Using the G30 model code as the whole fitment record
BMW G30 sedan variants may differ by year, market, engine, trim and installed brake package. Search results and catalogue labels help locate the product, but they do not replace the vehicle year, variant and original-brake inspection.
Using wheel diameter as the only selection rule
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, mounting details, ET, J, spoke profile and inner barrel still matter.
Risk note: incorrect year or variant information may result in a bracket that does not install. Unsuitable wheel geometry may leave insufficient caliper clearance even when the diameter looks large enough on paper.
Model and Specification Confirmation
| Control field | Current record | Order action |
|---|---|---|
| Page SKU | SLP-BMWG30-BC-GT6-6P-F-KIT | Keep this reference consistent across enquiry, quotation and packing record. |
| Vehicle identity | BMW G30 target family; exact vehicle not yet supplied. | Provide exact year, variant, market and VIN privately. |
| Original brakes | Installed 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. |
| Rear-brake boundary | Front kit only. Rear scope is separate. | If rear scope is requested, confirm EPB or mechanical rear calipers and drum-in-hat status. |
| 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. Painted caliper availability, colors, markings and labels must be checked against approved seller documentation. The requested Brembo wording is not used as a product identity because the current brief does not establish genuine Brembo manufacture.
Component Interface Engineering
| Component | Quantity | Interface review |
|---|---|---|
| Calipers | 2 | Front axle only; confirm mounting ear position and approved bracket specification. |
| Adapter brackets | 2 | Confirm year-specific offset and rotor centerline before release. |
| Rotors | 2 | Match the selected diameter to the actual wheel envelope and hub interface. |
| Brake pads | 4 | Confirm pad shape, compound and backing-plate match to the approved caliper body. |
| Brake hoses | 2 | Check fitting type, routing, steering movement and suspension clearance. |
Interface note: the complete kit is a matched front system. It should be quoted and packed as one front-axle assembly rather than as loose parts unless the buyer explicitly requests calipers only.
Complete Matched Kit vs Calipers Only
| Option | What the buyer gets | Why it matters |
|---|---|---|
| Complete GT6 front kit | Calipers, brackets, rotors, pads and hoses. | Best for a quoted conversion because the main fitment variables stay in one order record. |
| Calipers only | Calipers without the matched rotor and hose package. | Only suitable when the buyer already controls the rest of the front-brake system and approves the missing interfaces separately. |
| Current page scope | Matched front kit. | The page should not be read as a calipers-only offer. |
Buyer and Supply Scenarios
Global B2B buyer
Use this page to start a quotation when the buyer needs one front kit record, not a loose parts list.
Retail customer
Use this page to request fitment approval before ordering wheels, spacers or a large-brake conversion.
Modification workshop
Use this page as a fitment control sheet for year, variant, wheel envelope and hydraulic interfaces.
Importer or distributor
Use this page to keep the G30 record separate from G31 or G38 catalog entries and from unrelated BMW chassis pages.
Procurement Specifics
| Field | Current record | Buyer note |
|---|---|---|
| Packaging | 45 x 45 x 45 cm carton | Use this as the packing reference for freight and carton planning. |
| Gross weight | 45 kg | Use this weight for shipping planning only. |
| MOQ | Use the formal quotation for current commercial terms | Do not guess order minimums from the page copy. |
| Lead time | Use the formal quotation for current commercial terms | Do not infer stock or production timing from the SEO page. |
| Warranty | Use the formal quotation for current commercial terms | Warranty must follow the approved seller document. |
| Commercial status | No price, stock or live offer declared here | Request the quotation after fitment approval. |
Common Fitment Questions
Is this page for the front axle only?
Yes. The current GT6 record is a front six-piston complete kit. Rear calipers are not part of this page.
Do 18-inch wheels automatically work?
No. 18-inch wheels are only a planning reference. Final clearance still depends on year, variant, original brakes, ET, J, spoke shape and inner-barrel space.
Why do you ask for ET and J values?
Aftermarket wheels can have the right diameter but the wrong spoke angle, offset or barrel depth. ET and J help protect the wheel-clearance review.
Should GT6 or Brembo be treated as the product name?
GT6 is the buyer-supplied product identity. Brembo wording is not used as the formal product identity unless approved seller documentation proves it.
What if the buyer later wants a rear brake setup?
Open a separate rear-brake record. Confirm whether the rear calipers are EPB or mechanical and, if mechanical, whether the rear disc uses a drum-in-hat handbrake.
Documentation and Order Confirmation
Before production or shipment, match the enquiry and formal quotation to page SKU SLP-BMWG30-BC-GT6-6P-F-KIT. Confirm the exact BMW G30 vehicle record, 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. Do not transfer a G31, G38 or another BMW model-code bracket decision to the G30 without review. Installation should begin only after the buyer and qualified installer have checked 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.
04 Buyer resource Browse Big Brake Kits.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 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.
09 Buyer resource Review 2006–2013 BMW X5 E70 big brake kit with 6-piston calipers.Compare this related product first.
10 Buyer resource Review BMW X3 F25 front 6 piston brake caliper kit | Akebono 8N.Compare this related product first.
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