What does the BBS FI-R Centerlock wheel in 20x9.5 +50 fit?

It is the front axle fitment for the 991.2 Porsche 911 GT2 RS from 2017 to 2019, the 991.1 GT3 RS from 2015 to 2016, and the 991.2 GT3 RS from 2018 to 2019. All three left the factory with centerlock hubs. It will not mount to a five-lug Porsche hub.

Is the FI-R forged or cast?

Forged. BBS die-forges the FI-R from a single billet under up to 18 million pounds of force, producing a one-piece monoblock with no bolts or welds. Forging closes the internal porosity that casting leaves behind, which is what allows the rim section to be made thinner and lighter without giving up strength.

How much does the 20x9.5 FI-R weigh?

18.3lbs, or 8.3kg. That is a genuinely low figure for a 20 inch wheel 9.5 inches wide, and it is why the BBS FI-R Centerlock is fitted to cars that already came from the factory with weight taken out. Lower rotating and unsprung mass improves turn-in, braking and damper control together.

What rear wheel pairs with this front?

The 21x12.5 +48, part FI143, at 23.5lbs. A complete staggered set for the GT2 RS or GT3 RS is two of these 20x9.5 +50 fronts and two 21x12.5 +48 rears. The full set is listed separately on this site, which is usually the simpler way to order it.

What is the center bore?

84mm, which locates on the Porsche centerlock hub spigot. Because the wheel is secured by a single central nut rather than five studs, no spacers, adapters or centering rings are used. The nut is torqued to the factory specification every time the wheel comes off, using the correct Porsche centerlock socket.

Will this clear carbon ceramic brakes?

The 20x9.5 +50 is the BBS front fitment for cars delivered with the factory ceramic package, so clearance is accounted for in the design. Confirm before ordering if the car runs an aftermarket big brake kit, because caliper geometry varies between manufacturers and can change the clearance behind the spokes.

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Description

BBS FI-R Centerlock Diamond Black Wheel (20×9.5 +50) for 991 Porsche 911 GT2 RS and GT3 RS

The BBS FI-R Centerlock wheel was developed for exactly this kind of car, where every pound above the axle line has already been argued over by the factory. BBS has built race wheels since the 1970s, and the FI-R uses the same multi-stage die-forging: a single billet of aluminum pressed into a monoblock whose grain structure follows the finished shape of the wheel rather than running straight through it. At 18.3lbs in 20×9.5, this front wheel is light enough to be a real change on a 991 GT3 RS rather than a cosmetic one, and the Diamond Black finish lets the brake package and the tire do the talking. For an owner who bought the car for how it turns, this is the right place to spend.

Forged Construction

BBS die-forges the FI-R under up to 18 million pounds of force, starting from a billet of 6000 series aluminum or the company’s own magnesium alloy depending on the application. Forging closes the porosity that casting leaves behind and aligns the grain along the load paths the wheel actually sees, so the rim section can be made thinner without giving up strength. The spokes, hub face and barrel are one continuous piece of metal, with no bolts, no welds and no joint to fatigue.

Weight and Design

Each cross spoke carries a relief hole that takes material out of a low-load area, and the back faces are milled to the minimum section the structure needs. 18.3lbs is a serious number for a 20×9.5 wheel, and on a GT car it shows up in the places that matter most: less gyroscopic resistance to a quick steering input, less rotating mass for the carbon ceramics to arrest, and less unsprung mass for the dampers to manage over a kerb.

Centerlock Fitment

This is a true centerlock wheel, machined for the single-nut hub Porsche fits to the GT cars rather than adapted from a five-lug pattern. The 84mm center bore locates on the factory centerlock spigot and the +50mm offset places the 9.5 inch front where the GT2 RS and GT3 RS arches expect it. The matching rear is the 21×12.5 +48.

Features

One-piece die-forged aluminum monoblock
Multi-stage die-forging for grain structure aligned to the wheel’s load paths
Weight relief milled into each cross spoke
Lightweight at 18.3lbs for a 20×9.5 wheel
Machined for the factory Porsche centerlock hub
Diamond Black finish
BBS Forged Line series

Specifications

Series – BBS Forged Line
Model – FI-R
Construction – One-piece die-forged aluminum monoblock
Diameter – 20″
Width – 9.5″
Offset – +50mm
Fitment – Porsche centerlock
Center Bore – 84mm
Weight – 18.3lbs (8.3kg)
Position – Front axle
Finish – Diamond Black
Part Number – FI142DB

Applications

Porsche 911 GT2 RS: 991.2 | 2017-2019 | 3.8L Twin-Turbo Flat-Six
Porsche 911 GT3 RS: 991.1 | 2015-2016 | 4.0L Flat-Six
Porsche 911 GT3 RS: 991.2 | 2018-2019 | 4.0L Flat-Six

Notes

Sold as a single wheel, not a set of four
This is the front axle fitment, and a full set needs two of these plus two of the matching 21×12.5 +48 rear
The complete staggered set is listed as the BBS FI-R Centerlock Wheel Set for the 991 GT2 RS and GT3 RS (FIR142/FIR143)
The same wheel is also listed in Gold (FI142GL)
Browse the full BBS FI-R centerlock range
Fits the factory Porsche centerlock hub only and will not mount to a standard 5-lug PCD hub
Centerlock installation calls for the correct Porsche centerlock socket and a torque wrench rated to the factory specification
TPMS sensors are not supplied with the wheel
Vehicles that have been lowered or otherwise modified need sufficient clearance between the wheel arches and the suspension components. Tire size and positioning should both be checked against the revised setup.

Frequently Asked Questions

What does the BBS FI-R Centerlock wheel in 20×9.5 +50 fit? It is the front axle fitment for the 991.2 Porsche 911 GT2 RS from 2017 to 2019, the 991.1 GT3 RS from 2015 to 2016, and the 991.2 GT3 RS from 2018 to 2019. All three left the factory with centerlock hubs. It will not mount to a five-lug Porsche hub.
Is the FI-R forged or cast? Forged. BBS die-forges the FI-R from a single billet under up to 18 million pounds of force, producing a one-piece monoblock with no bolts or welds. Forging closes the internal porosity that casting leaves behind, which is what allows the rim section to be made thinner and lighter without giving up strength.
How much does the 20×9.5 FI-R weigh? 18.3lbs, or 8.3kg. That is a genuinely low figure for a 20 inch wheel 9.5 inches wide, and it is why the BBS FI-R Centerlock is fitted to cars that already came from the factory with weight taken out. Lower rotating and unsprung mass improves turn-in, braking and damper control together.
What rear wheel pairs with this front? The 21×12.5 +48, part FI143, at 23.5lbs. A complete staggered set for the GT2 RS or GT3 RS is two of these 20×9.5 +50 fronts and two 21×12.5 +48 rears. The full set is listed separately on this site, which is usually the simpler way to order it.
What is the center bore? 84mm, which locates on the Porsche centerlock hub spigot. Because the wheel is secured by a single central nut rather than five studs, no spacers, adapters or centering rings are used. The nut is torqued to the factory specification every time the wheel comes off, using the correct Porsche centerlock socket.
Will this clear carbon ceramic brakes? The 20×9.5 +50 is the BBS front fitment for cars delivered with the factory ceramic package, so clearance is accounted for in the design. Confirm before ordering if the car runs an aftermarket big brake kit, because caliper geometry varies between manufacturers and can change the clearance behind the spokes.

About BBS

In 1970, two race car enthusiasts from Schiltach in Germany, Heinrich Baumgartner and Klaus Brand, founded BBS to build lightweight fiberglass body panels that gave teams an advantage on track. BMW Motorsport noticed, and the company grew quickly. In 1983 BBS introduced the three-piece RS wheel, a design still regarded as one of the best ever made. The company remains committed to its founding idea: Technology through Motorsport.

BBS builds wheels for cars, trucks and SUVs across three ranges. The Forged Line covers one-piece and two-piece forged designs, the Performance Line covers one-piece and dual-construction flow formed models, and the Design Line covers low pressure cast rims. Design, testing and manufacturing all happen in house, which is how BBS keeps its original equipment programs and its motorsport programs feeding each other.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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