SU Carburetor History: Back in the early 70’s, Rivera got its start when Mel Magnet (The Founder of Rivera Engineering) took off SU carburetors from some British cars and did some magic to adapt them to Harleys. In 1974, Custom Chopper Magazine sponsored the “Search for King Carb” shoot-out between all the top carburetors back then to find the “King of Carbs”. And guess who won hands down? The Rivera SU. Fast forward forty years and Rivera Primo Inc. is still making the SU to Rivera Primo standards.

Applications: When Rivera started making the SU back in the 70’s, there wasn’t any Evo’s or Twin Cams even on the drawing board yet, so all the kits we made were for Iron XL’s, Knuckles, Pans and Shovels. Well, Rivera Primo still make all those kits and on top of that now have kits for all Evo Big Twins and Twin Cam applications.

The New SU Carburetors For Evo Sportsters: The company has been asked by many customers to create a kit for Evo XL’s (Sportsters). Available immediately in Cast finish (Ref: 1041-0062), polished finish (Ref:1041-0063) and chrome finish (Ref: 1041-0064), the new SU kit for Evo XL’s fits all Evo style Sportster models!

About Rivera Primo®: The company, as mentioned above, started life under Mel Magnet’s guidance as Rivera Engineering® in 1973 and then Mel added Primo® Belt Drives into its fold in 1977. After nearly 35 years living life under two banners, the two companies were merged under one name, Rivera Primo Inc®. Rivera Primo celebrate this year its 40th anniversary.