S&S Gear Drive Camshafts must be used with S&S gear drive components. Seven cam profiles for 1999-'06 and five profiles for 2006-up engines are available to cover a wide variety of engine displacements and compression ratios. With the exception of the "bolt in" 510G, S&S gear drive cams are high lift and were designed to take advantage of the extra flow of ported stock heads or S&S Super Stock® cylinder heads. Due to the high lift of these cams, S&S adjustable pushrods and high performance valve springs are recommended.

S&S 509G S&S has come up with new 509 bolt-in torque cams that work with stock valve springs in 1999-’04 engines. Like the S&S 551 cams, the new 509 cams are great for low and midrange torque, but the 509 cam’s lower lift allows them to be bolted into stock 1999-’04 engines with stock valve springs. That saves a lot of time and money on the installation, which makes the S&S 509 a lot more attractive to owners of older Twin Cam 88 powered bikes. Of course, the 509 cam also works great in 2005-’06 88" engines, except 2006 Dyna® models.
S&S 510G: Designed as a bolt in cam for 88" to 95" engines with compression ratios below 9.7:1. Intended primarily for stock heads that have not been ported.
S&S 570G: Designed for 88" to 95" engines with compression ratios between 9:1 and 10:1.
S&S 585G: Designed for 88" to 95" engines with compression ratios from 10 to 10.5:1 and 100" and 107" engines at 9.7:1 to 10.5:1 compression.
S&S 625G: Cam Set designed for 95" or larger engines with compression ratios between 10.0 and 10.75:1
S&S 640G: Designed for engines of 95" or more with compression ratios between 10.5:1 and 11.5:1 used in S&S 124" engines.
S&S 675G: Designed for 120" or larger engines with at least 11:1 compression ratio.

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CONTACT INFO
Scooters Performance
31615 Long Acres Drive
Sorrento, Florida 32776

Call Us Tuesday - Friday 10a-4p or Saturday 10-2:30
1-407-330-2056

Return Policy
If you are not completely satisfied with your purchase, Scooters Performance will accept within 14 days a new/unused item in its original box, prepaid, with a copy of the invoice for a refund/exchange.

S&S Gear Drive Cam kit 510G 99-06 Twin Cams (except 06 Dyna)