Anyone who has heard of the brand name Star Racing knows that it is synonym for horsepower . Star Racing founder George Bryce is one of the " Gs " in G-Squared Motorsports , the world championship winning cooperation between Star Racing and S & S Cycle Inc . They have taken the most power out of any gas burning Harley-Davidson and reached 200 mph in just 6 seconds . " Now all of George ' s knowledge about gaining usable horsepower is available in this ' boundary pushing ' range of street and race Star Racing cams . " In addition to boosting horsepower and torque these cams let Twin Cam and Milwaukee Eight engines sound like a Harley should ."
M-8 30 / 30 Cam with . 485 " Lift
This is the biggest Star Racing cam for stock M-8 applications . It has a 1,700 to 5,500 rpm range and works well with the stock springs . The intake closes at 25 ABDC " and delivers a unique combination of torque ( intake lobe ) and mid-range ( exhaust lobe )."
Yoshimura - Pan America RS-12 ADV Slip-on
Torkstar 577 Chain Drive Cams
These bolt-in cams for stock and Stage 1 103 and 110 ci engines give reliable performance with a superior powerband from 2,000-5,000 rpm . They have . 577 " lift and work with adjustable pushrods and stock valve springs . They fit 2006 Dyna and all 2007-2017 Twin Cams .
Thrasher 650 Chain Drive Cams
These performance cams for Twin Cams with 107- 113 ci are designed for high performance touring and occasional track visits . They " give power delivery from early to late for the widest useable powerband ever ," have . 650 " lift and work with adjustable pushrods and . 650 " high lift valve springs . They fit 2006 Dyna and all 2007-2017 Twin Cam .
Bagzilla 680 Gear Drive Cams
These are the cams used in the fastest Star Racing Twin Cam Bagger - reaching 150 mph ( 241.4 km / h ) on the Quarter Mile . Designed for 124 ci and larger motors , they " make tons of power from 3,000- 7,000 rpm ." They work with S & S gear drive , adjustable pushrods and . 680 " high lift valve springs . They fit 2006 Dyna and all 2007-2017 Twin Cams .
M-8 3 / 4 Race Cam with . 585 " Lift
Described as Star Racing ' s best seller , this race cam gives the " most lift for reliable performance in the 2,300 to 6,500 rpm range . The intake closes at 42 ABDC . This cam needs high performance springs and is great for 124 though 133 ci big bore kits - really pulling hard from 2,500 rpm and up ."
M-8 3 / 4 Full Race Cam with . 615 " Lift
Star Racing ' s most powerful M-8 cam is " designed for maximum performance in the 3,000 to 7,000 rpm range ." The intake closes at 52 ABDC and high performance springs must be used . They are made for big 133-150 ci engines or high revving 124-133 ci engines . " Sounding like a race cam should , an experienced installer needs to check spring capabilities , coil bind , installed heights , piston to valve clearances , etc ."
ZODIAC INTERNATIONAL BV Mijdrecht , NETHERLANDS Tel : + 31 ( 0 ) 297 288 621 sales @ zodiac . nl www . zodiac . nl www . starracing . com
In what is a new move for the legendary performance exhaust manufacturer , Yoshimura has released its first ever exhaust product for a Harley-Davidson model . The Japanese-American company is best known for its racetrack and sports bike exhausts , but that pedigree has already been informing its popular ADV model fitments for BMW and other dual sport models for many years . Now , that expertise is available for Harley Pan America owners with the new Yoshimura RS12 ADV Street Series RS-12 ADV Street Series titanium slipon . The company says that under testing " the big V-twin responded to the RS-12 ADV titanium with nice gains . It weighs in 6 lbs lighter than the stock muffler with HP up by + 1.4 % and maximum torque increased by + 2.5 %. " We didn ' t stop there though . To add to the look and safety of the Pan Am , we developed our own proprietary carbon fiber heat shields to protect the rider ' s foot and leg from excessive muffler and catalyst heat . These two shields come as components included with our RS-12 ADV slip-on system .
" Also available for the Pan America , our renowned fender eliminator kit will enhance the sound and look further . Our RS-12 ADV system and fender eliminator kit for the Harley Davison Pan Am are designed and manufactured by us in Chino , California ."
YOSHIMURA R & D Chino , California , USA Tel : 909 628 4722 sales @ yoshimura-rd . com www . yoshimura-rd . com
44 AFTERMARKET MOTO DESIGN - AUGUST 2022 www . AMDchampionship . com