Developed from years of NHRA Pro-Stock motorcycle, Bonneville land speed racing and street building experience, Chris Rivas V-Twin (Fresno, California) is confident that with its Rocket Cams “you are getting the highest quality American made camshafts for your twin cam engine.”
Available from HardDrive American V-Twin Products, Chris Rivas Signature Series Rocket Camshafts also feature the Easy Start centrifugal compression release system, licensed by S&S Cycle for easy starting with large displacement and higher compression ratios motors.
HardDrive says that “these performance cams are a bolt in application that will utilize the stock valve springs but will need adjustable pushrods and we recommend additional enhancements such as a high flow air cleaner and performance exhaust. Each is designed specifically for a particular riding style with a smooth, strong power band that kicks in right where it’s needed.”
Cams available include the Rocket 514 Cruising Style Hi-Torque Cam, with peak performance between 1500 to 5000 rpm. “With incredible low rpm pulling power the 514 is recommended for heavier bikes with compression ratios up to 9.5:1.”
The Rocket 554 is a Powerful Cruising Cam, with peak performance between 1500 to 5800 rpm. “The 554 delivers strong, above average mid-range passing power and is suited for stock 88” to 107” big bore motors with compression ratios up to 10:1.”
HardDrive says its #1 bestselling Rocket Cam is the 574 - “a powerful Street/Cruising Cam with peak performance between 1500 and 5800 rpm and above average mid-range power that works great with compression ratios up to 10:1”.
Its second most popular, the # 584 is a “hot high-lift cam for engines with displacements of 103 ci. to 110 ci. Peak performance is in the 2000 to 6000 rpm range. It delivers constant power while reducing detonation and is best used with ported heads and a minimum compression ratio of 10:1.”
HARDDRIVE V-TWIN
www.hdtwin.com