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Rocker Box for Evo
Sifton Evo Rocker Box Breather Upgrade Kit includes tap, 
drill bit, breather tubes and instructions. Fits 1992-99 Big Twin.
VT No.   Item
16-0914  Breather Upgrade Kit
16-1069  Breather Tube Insert Set
Remove material 
here to achieve 
correct alignment
Underside of outer rocker box 
cover
Umbrella valve 
replace during 
reassembly
Drain Hole Enlarge 
with drill bit supplied 
in kit
Rocker 
Cover 
Spacer
Install Slobber Stopper in this hole. 
Tap threads in this hole using tap 
supplied in kit
Umbrella Valve fits inner rocker box 
cover on 1992-99 Evo.
VT No. 14-0925
Chrome Two Piece Rocker Box Set for 2 heads for 1984-99 
Evo models.
VT No.   Item
11-2701  Rocker Box Set
15-1503  Gasket Set
16-1673  Wrench Set
Chrome Rocker Cover Set fit all 1984-
up Evo Big Twins. Set is vented out of 
the crankcase or through the head type.
Umbrella valves included for use on 
1993-1999 cylinder heads. Set includes 
base and top cover, rocker shaft supports, 
gaskets and mounting hardware.
VT No.   Item
11-4050  Rocker Box Set
15-1221  Gasket Set
42-0754
11-2701
11-2701 
Internal
42-0754 Internal
V
2
 Rocker Box Sets are precision die-cast covers that are 
machined. Six piece complete set includes all necessary 
gaskets for installation for both heads.
Chrome Black 
Fits
42-0754  42-0355 1984-91
42-0787  42-0356 1992-99
42-0787
42-0787 Internal
16-1069
42-0356
16-0914