GB:SMB Exhaust Products Introductory GB!! Great Prices & Savings for RCC Members!!

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We at JKL Racing Engineering are proud to announce that we have become the Exclusive Distributor of SMB Products for the RX7 & RX8 in North America. To mark this special occasion, JKL Racing Engineering will be offering a Special Introductory Group Buy exclusively to RCC members.

For those of you that do not know about SMB, here is some background information:

In 1961, Ern Walker started working for himself when he was 21 making extractors and exhaust systems for motor vehicles to increase their performance. In 1982 Grant Walker joined the company after having previous experience working for major automotive original equipment supply companies. Grant took over the role of development, sales and marketing of new exhaust for new motorcycle models.
It wasn't long before inquiries started to come regarding exhausts for high performance motor vehicles, and the lessons and concepts learnt from working with the latest motorcycle engines were easily transferred to new generation of high performance engines. In 1995, Mazda Australia approached E.S. Walker Manufacturing when they were building the Australia’s high performance of the RX-7 m dubbed the RX7 SP.



This model was developed as an official road-going version of the factory race cars used in the 12hr endurance races held at Bathurst, New South Wales, beginning in 1991 for the 1995 event held at Eastern Creek, Sydney, New South Wales. An initial run of 25 were made, and later an extra 10 were built by Mazda due to demand. The RX-7 SP was a serious race car that matched their rival Porsche 911 RS CS for the final year Mazda officially entered. The formula paid off when the RX-7 SP won the title, giving Mazda the winning 12hr trophy for a fourth straight year. A later special version, the Bathurst R, was released in 2001.



As the volume of work was rapidly increasing, the decision was made to form a new company in order to market and sell the automotive aftermarket exhausts and performance components. This is how the company "Special Men’s Business” (SMB) came about.

Why SMB? Countless hours of R&D and race inspired technology has made it possible for SMB to bring their line of quality exhaust components to car enthusiasts all over the world. SMB makes produces their own line of polished exhaust parts from Metallic Substrate Cats to Dolphin-Tail Cat-Back Exhaust systems.


What are the Advantages of the Metallic Substrate Cats compared to the Ceramic cats?

Benefits of Metallic Vs (Conventional) Ceramic

1. A much higher flow capacity - Nearly twice the capacity of ceramic core

2. Resistance to cracking - Handling of ceramics is always difficult as they are fragile

3. Resistance to melting - Ceramics especially on a rich engine melt down at a lower temp than the metallics

4. More durable. Metallics are able to withstand impact from various road debris. A common problem is hitting the converter on gutters, or on rocks which would otherwise crack the ceramic core

5. Less weight - Ceramics are a denser core and as such weigh more.

6. Resistance to oil fouling - Ceramics if they get clogged with oil will overheat and melt down quickly, metallic’s usually will burn off the excess oil and still be OK for use. (learned this on the Dyno blowing up a few turbo’s and Miata engines)

7. These metallic cats are also 200 CFM cats. These are the same CFMs as the ones used in the Knightsport Metalit cats.

"With our metallics we spent a lot of time getting the taper right on entry to the core, we are quickly getting copied on this as it works, there is still some in the market that resist and still do a blunt dome type taper on their converters, which means that their converters can’t flow as well as ours."

-Grant Walker