Some of the after market derby cover and Harley-Davidson accessories derby cover will be hit to weight of VP clutch. This is the “Template” to check clearance between derby cover and VP clutch. (See picture)

＊Caution－This Template for 1999 and up 5 holes Derby Cover

Align Bolt-mark on template to the top of bolt hole on the derby cover and lower side align to the center of bottom two holes on the derby cover when checking a clearance.

Derby Cover Gasket

Use O-ring type derby cover gasket or our "Special Gasket" when installing VP clutch or cut inside derby cover gasket of Harley-Davidson made (part#25416-99C), because weight of VP clutch will be hit to derby cover gasket. (See picture)

O-ring type derby cover gasket can not be use for Late 05' Touring model and 06' to later all model, because they do not have groove on the primary cover for O-ring type derby cover gasket.

1990 to 1993 FXR and FLT

May need to grind Primary cover on 1990 to 1993 FXR and FLT when installing VP-Clutch. Primary cover on 1990 to 1993 FXR and FLT are different from other years or other model. There are not enough clearance between VP Clutch and Primary cover.

Points to noten installin wheg VP-Sport on 1991-93 XL models

As there is little clearance between the VP clutch and the primary case it is not possible to install VP-005-150A, 190A, 240A on the early 1991-93 XL models with a standard primary cover. When purchasing please make careful note of your bike's year model.
A normal VP clutch installation is possible by using one of the following primary covers:
A normal VP clutch installation is possible by using one of the following primary covers:
•25430-94A [Polished] •25460-94 [Chrome] •25471-97Y [Silver]
To make sure note down the bike identification number.
To make sure note down the bike identification number.
1 HD 4 CA M 1 M Y 110000
M-1991 Model
N-1992 Model
P-1993 Model

Symbols and numbers other than the above vary by bike model

There are many combinations of VP Clutch and Clutch spring for various motors. The VP Clutch can be more detail turning for your motor. (Go to Master Chart and Torque Chart)

Non stock derby (including ’03 Anniversary cover) cover will require a Derby cover spacer due to a clearance issue. This list shows what thickness of the spacer is needed on the HD genuine accessory covers.

Most of other after market cover dose not have any recess on the back of the cover so they requires 1/2” thick spacer.
We also strongly recommend to use our special 0.60” thick derby cover gasket with those cover to add more clearance.

No spacer required.
Stock		25340-99A Live to Ride
25334-99A Frame		25338-99 H-D Motor
25335-99 V-wing		25713-99 Twin Cam
Required the Derby cover spacer 1/4” thick spacer required
25441-04A Skull		25770-99 Flying Wheel
25001-03 100th Anniversary
1/2” thick spacer *Any other after market covers which have no recess on the back of the cover
25347-02 Bar&Shield		25345-01 Slotted