1. CATALOG
  2. 08 Primary
  3. Auto- & Lock-Up Clutch

Zodiac Parts by Harliepleats

 Shoppingcart
0 articles
Checkout
712114
712100712126712128712144712108712129712121712122712124712124712114
The Variable Pressure Clutch (VPC) by Tak's Performance Parts is not "just a lock-up clutch". The VPC is a system that reduces spring pressure at idle, and as the centrifugal force increases in line with rising engine rpm it provides the clutch with the required pressure to match engine torque. It makes for easy clutch lever work from idle to 3000 rpm which requires many gear shift changes. In short, it will give you a lighter operating clutch, with a stronger engagement when it revs up and it will stop your stock clutch from slipping when you have a high performance muscle motor. All this can be achieved in a mere 10 minutes.

Some Variable Pressure Clutch features:
•Works like a Lock Up clutch
•Up to 40% (55% for pre-2004 Sportster) reduced clutch lever effort than stock at idle
•Not only lighter, but stronger clutch engagement than stock when it revs up
•10 minutes installation (only 1998 and later Big Twin models)
•Better clutch disengagement and feel than stock
•Easier to find neutral
•Fits behind most stock derby covers

Note: Clutch pull becomes heavier when RPM increases
Note: Please refer to the Pro Clutch and belt drive sections for TPP's Variable Pressure Clutches for Primo/Rivera Pro Clutches and Primo belt drives.

Specifications

712126712128712144
VPC for 1998 to present Big Twin Models (using stock clutch spring)

Note: Fits behind most derby cover. Some derby covers may require a spacer ring. Always check clearance. Clutch pull becomes heavier when RPM increases.
Article number Description Retail price Add to list
VP70T, for stock 1998 thru 1999 Big Twin and 1999 thru 2006 Twin Cam. 40% lever effort reduction
VP84T, for cable clutch equipped 2007 thru 2017 Twin Cam except 2013 and later CVO Touring. 20% lever effort reduction
Fits 2018 to present Softail. 30% lever effort reduction
CVO, for 2013 thru 2015 CVO Touring except 2015 FLHTKL & FLHTCUL. Comes with a shim set so that the clutch can be tuned for your needs. Up to 25% less clutch lever effort for stock engines, but also ideal for high horsepower monsters with up to 140ft/lbs
Fits 2015 FLHTKL & FLHTCUL and all 2016 to present Touring with hydraulic clutch. Same as ZPN 712119 but comes with a spacer ZPN 712142 for the derby cover
Derby cover spacer only to install ZPN 712119 & 712127 on models with the 2015-up narrow primary cover
VP92T EVIL, for High Performance Big Twins. 7% lever effort reduction
VPC for 1998-up Big Twin Models with High Performance spring

High Performance engines needs a High Performance clutch. With these combinations of a T.P.P. Variable Pressure Clutch with the extra strong diaphragm spring you can turn your VPC into a real High Performance clutch for mildly tuned to fully modified Big Twins.

Note: Fits behind most derby cover. Some derby covers may require a spacer ring. Always check clearance. Clutch pull becomes heavier when RPM increases.
Article number Description Retail price Add to list
VP70T, for fully modified Big Twins, up to 103 CI (1,690 CC). 25% lever effort reduction
VP84T, for fully modified Big Twins, up to 120 CI (1,970 CC). 0% lever effort reduction
VP92T EVIL, for fully modified Big Twins, up to 131 CI (2,150 CC). 18% lever effort increase
Replacement High Performance spring only
712108
VPC for 1990 thru 1997 Big Twin Models

Note: Requires removing primary cover during installation. 1990 thru 1993 FXR and FLT may need modification due to clearance issue. Clutch pull becomes heavier when RPM increases.
Article number Description Retail price Add to list
VP-Evo with 190lbs diaphragm spring. For stock engines. 40% lever effort reduction
VP-Evo with 240lbs diaphragm spring. For mildly tuned engines. 20% lever effort reduction
VP-Evo without diaphragm spring. For highly tuned engines. The stock spring is used. 0% lever effort reduction
712129
VPC for 1991 thru 2003 Sportster Models

Note: Requires removing primary cover during installation. 1991 thru 1993 Sportster requires a 1994-2003 primary cover due to clearance issue. Clutch pull becomes heavier when RPM increases.
Article number Description Retail price Add to list
VP-Sport with 150lbs diaphragm spring. For stock 55CI (883 CC). 55% lever effort reduction
VP-Sport with 190lbs diaphragm spring. For stock 74CI (1200 CC). 40% lever effort reduction
VP-Sport with 240lbs diaphragm spring. For mildly tuned engines. 20% lever effort reduction
VP-Sport without diaphragm spring. For highly tuned engines. The stock spring is used. 0% lever effort reduction
712121712122712124712124
VPC for 2004 to present Sportster

Note: Installation requires removal of some material from the fins on the inside of the primary cover. Comes with instructions and template. Clutch pull becomes heavier when RPM increases.
Article number Description Retail price Add to list
VP-Sport with 150lbs diaphragm spring. For stock 883 engines. 40% lever effort reduction
Replacement 150lbs diaphragm spring
VP-Sport with 190lbs diaphragm spring. For stock XL 1200 and mildly tuned 883 engines. 25% lever effort reduction
Replacement 190lbs diaphragm spring
VP Sport without diaphragm spring. For highly tuned engines. The stock spring is used. 0% lever effort reduction
712114
VPC for V-Rod Models

The drop-in designed VPC for all V-Rod models, no modifications needed. Comes with a shim set so that the clutch can be tuned for your needs. Up to 35% less clutch lever effort for stock engines, but also ideal for high horsepower Supercharged or Turbo charged V-Rods.
Article number Description Retail price Add to list
TPP Variable Pressure Clutch for 2002 thru 2007 V-Rods
TPP Variable Pressure Clutch for 2008 thru 2017 V-Rods

Recommended Retail Prices include 21% sales tax.

Prices exclude shipping, import duties and installation.