Sourcing and Restoring Authentic Period-Correct Wheels: Mugen CF48s and NR1s
There’s a specific kind of satisfaction that comes from bolting a freshly restored set of vintage Mugen wheels onto a classic Honda—the kind that tells everyone who knows that you’ve paid your dues in the JDM community.
You know that feeling when you’re scrolling through auction listings and you spot a set of those iconic eight-spoke wheels with the weird finned design, and your heart skips a beat? That’s the Mugen CF48 effect. These wheels aren’t just wheels—they’re a statement, a connection to Honda’s golden era of grassroots racing and factory-backed tuning . But finding them and bringing them back to life is a journey that requires patience, knowledge, and a willingness to get your hands dirty.
The Legacy: Why These Wheels Matter
The Mugen CF48 is arguably the most iconic wheel ever made for Honda enthusiasts . With their distinctive finned design, they were created for 1980s and early 1990s Hondas, available in sizes from 12×4.5 up to 15×6 . Available in 13″ and 14″ primarily (with some 15″ sets out there), they’re a perfect fit for Civic, CRX, third-generation Accord, or pop-up headlight Integra builds .
The CF48 was produced by Mugen in a 4×100 bolt pattern only . Specs vary, but they were offered as small as 13×5.5 and up to 15×6, with the common 14×6 size having a +38 offset . They also had optional aero disc covers that are “extremely rare” today .
The Mugen NR wheel is a simpler, eight-spoke design that was also offered for classic Hondas. The official Mugen NR, as listed on Mugen’s website, was a 14x5JJ wheel with a +42 offset, available in Mirror Face (¥29,160 per wheel) or Silver (¥28,080 per wheel) . NR stands for “N1 Racing” and represented Mugen’s entry-level performance wheel at the time.
The Hunt: How to Find Them
Finding a set of CF48s or NR1s requires persistence. Here are your primary channels:
Auction Sites and Classifieds: Keep an eye on Bring a Trailer, Yahoo! Auctions Japan, and JDM-focused classifieds. A complete set with aero discs will command top dollar .
JDM Importers: Companies that specialize in Japanese parts, like JDMDistro, sometimes have sets available .
Online Marketplaces: eBay and Facebook Marketplace occasionally have sets or individual wheels .
Sourcing from Japan: Importing a set yourself is possible but requires a contact in Japan to handle shipping . Costs can quickly add up: €350 for the wheels, €50 for domestic transport, €150 for a middleman, €250 for shipping, and €50 for customs, putting you around €850 before restoration .
The Restoration Process: Bringing Them Back
Once you’ve secured a set, the real work begins. Most CF48s you find will have been through a lot: decades of brake dust, corrosion, and previous owners.
Step 1: Clean, Then Clean Again
Start by thoroughly cleaning the wheels to see what you’re dealing with. The back of the wheels often hides 40 years of brake dust and corrosion. You can scrape the wheel mounting surface flat while using phosphoric acid to loosen corrosion .
Step 2: Address Corrosion
For corrosion on the backside of the spokes, options include citric acid rinse and repeat, or CLR (based on sulphamic acid) . Some builders use Septone Alibrite, but be careful as it can be too aggressive on paint .
Step 3: Find Missing Components
If you’re missing aero discs, reproductions exist on eBay, along with repro stickers :
- Aero discs: Available from eBay sellers
- Stickers for aero discs: Available in gold
- Center caps: Originals are expensive—some owners use replica caps with 3D Mugen stickers
- Valve caps: Options available on AliExpress
- Aero disc fasteners: Use M4x6 cap screws
Step 4: New Lug Nuts
This is critical. Aftermarket wheels for Hondas typically use a conical seat, whereas factory wheels use a spherical seat. You must replace the lug nuts with the correct type for aftermarket wheels. Mugen still makes the right lug nuts—part number 08181-M07-K0S0-BL .
Step 5: Consider Professional Rebarreling
If you want a wider setup, companies like Izanami Wheel offer custom rebarreling, turning 14×6 CF48s into 14×8 wheels while preserving the original look .
Cost Reality: What to Expect
Finding a complete, mint set of CF48s in Japan can be “astronomically expensive” . A set in decent but used condition without the “big round covers” might cost under €1,000 . However, truly beautiful, unmolested original sets command far higher prices.
A complete, restored set with aero discs on a desirable car can significantly boost the vehicle’s value, as seen on Bring a Trailer where a City Turbo II wearing CF48s sold for $14,000 .
Frequently Asked Questions
What vehicles are CF48s compatible with?
The CF48 was made for 1980s and early 1990s Hondas with a 4×100 bolt pattern. Popular applications include the Civic, CRX, third-generation Accord, and pop-up headlight Integra .
What are the stock specs for Mugen CF48 wheels?
CF48s were offered in sizes from 13×5.5 to 15×6. The common 14×6 size has a +38 offset and a 4×100 PCD .
What are the stock specs for Mugen NR wheels?
The original Mugen NR was a 14x5JJ wheel with a +42 offset, available in Mirror Face and Silver, with a list price of approximately ¥29,160 and ¥28,080 per wheel respectively .
What kind of lug nuts do CF48s require?
CF48s and other aftermarket Mugen wheels use a conical seat lug nut, different from the spherical seat of factory Honda wheels. Mugen offers the correct lug nuts (part number 08181-M07-K0S0-BL) .
Are the CF48 aero discs available?
Original CF48 aero discs are extremely rare . However, reproductions are available from aftermarket sellers, often found on eBay .
References
For further reading and to verify technical information:
- Honda Insight Forum – Mugen CF-48 Build Thread
- JDMDistro – Mugen CF48 Wheel Listing
- Jalopnik – Mugen CF48 Wheel Profile
- MUGEN – Official NR Wheel Specifications
Have you ever tracked down a set of rare JDM wheels—or are you on the hunt for CF48s right now? Drop your sourcing stories and restoration tips in the comments below.
