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Camshafts

TTS Camshafts are designed to provide low-to-mid range torque improvements and smooth power delivery.

Substantial torque gains are achieved without compromising top end power.

Bolt-in design for 2007 and later Twin Cams utilizes stock pushrods to keep upgrade costs to a minimum.

TTS Camshaft
Item Part Number Fitment Price Dyno Charts

TTS-100

Designed to increase low end torque (1000-4000) and to make smooth power from idle to 5500 RPM.

Developed for 88-110 cu. in. with stock heads and pistons. Not recommended for compression over 10.2:1.

Ideal for heavy bikes like baggers or trikes.

FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE.

2000300 All '07 - '17 Harley-Davidson Twin Cams and '06 Dynas $377.91 product image
2000302

All 1999 - 2006 Harley-Davidson Twin Cams except '06 Dyna

Requires conversion to '07 - later style cam drive (see note 1 below)

$377.91

TTS-150

Designed to increase mid-range torque (2200-5200 RPM) and to make smooth power from idle to 5500 RPM.

Developed for 88-110 cu. in. with stock heads and pistons. Not recommended for compression over 10.2:1.

FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE.

2000303 All '07 - '17 Harley-Davidson Twin Cams and '06 Dynas $377.91 product image
2000304

All 1999 - 2006 Harley-Davidson Twin Cams except '06 Dyna

Requires conversion to '07 - later style cam drive (see note 1 below)

$377.91

Note 1: 1999 - '06 Conversion to '07 Style Cam Drive System

All TTS camshafts for H-D Twin Cam engines are designed to utilize the more efficient 2007 - later cam drive system. This system uses hydraulic tensioners and oil pressure to maintain chain tension. The parts to complete this conversion are listed below and can be purchased from your local H-D dealer.

Description H-D P/N Qty
Cam support plate25355-061
Plate mounting screws
(recommended, but old screws can be reused)
4741A 8
Oil pump26037-061
Secondary cam drive chain25683-061
Rear cam sprocket (‘02-’06)25728-061
Crank sprocket25673-061
Primary cam drive chain25675-061
Retaining ring (front cam)114611
Primary chain tensioner39968-061
Secondary chain tensioner39969-061
Primary tensioner mounting screws9422
Secondary tensioner mounting screws4740A2
Cam spacer kit
(includes one spacer in each size
0.100", 0.110", 0.120", 0.130", 0.140", 0.150")
25928-06 1

In addition to the parts listed above, two modifications are necessary for use on '99-'06 H-D Twin Cam models (except '06 Dyna):