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172
Sifton Hydraulic Tappet Unit 
Sets feature maxi-axle roller 
and pin design and unique 
“no-bleed” integral pump unit. 
Unique pump design features 
full hydraulic action up to 5000 
RPM, then act as solid. Set of 
four.
VT No.  Size
10-0583 Standard
10-0584 .002
Evo 1340 Solid Tappets can only be used with adjustable 
pushrods. Jims brand sold each. Sifton
TM
 brand sold in set of 
four.
Jims Big Axle  Sifton
TM
 Size
10-0636 
10-8256 Standard
10-0637 
10-8257 .005
    —
 
10-8258 .010
Sifton Hydraulic Tappet 
Assembly Sets of 4, fea-
ture centrifugal surface fine 
grinding and precision fit 
rollers and pins.
VT No. 
Size
10-0779 Standard
10-0780  .002
10-0781  .005
1984-99 Evo 
Tappets
Hydrosolid Internals
Hardened Pushrod Seat 
 
Oil Control Disk 
 
Hydraulic Cylinder Steel ground to 10 finish.  Hand fit to .0002 
using air gauge, the most accurate means of measurement. 
 
The valve, super flat fit to hydraulic body 
 
Spring to help control hydraulic body 
 
Tappet body is heat treated and ground 
 
The roller axle, crimped to 3000 PSI to stop inner race from turn-
ing. The axle  hole is held perpendicular to the outside diameter 
of the tappet within .002
Evo Big Twin Replacement Hydraulic Tappets. 
Replaces OEM# 18523-86A. Sold each.
VT No.  Size
10-8373 Standard
10-8374 .002
10-8375 .005
Tappet Roller Repair 
Kit includes four pins and 
four roller assemblies. 
VT No. 
Brand
10-2534 V-Twin
10-0529 Crane
Jims Hydrosolid Big Axle 
Tappet Assemblies have a 
built in anti-pump device, per-
form like a hydraulic from start 
up to about 5500 RPM and 
turns into a solid at 5600 RPM.
Size 
VT No.
Standard
  10-0657
.002
 
10-0658
Power Glide Evo 
Hydraulic Tappets 
available as individ-
ual units replacing 
18523-86 in stan-
dard and .005.
Big Axle Size
10-0645 Standard
10-0645
10-2534
10-0583
Sifton
10-8373
Jims Powerglide Steady Roll Tappet feature a special bronze 
alloy roller bushing in place of stock type loose needle roller 
bearing. 
Size 
1984-98 FXST, FLT  1999-up FXST, FLST
Standard 
10-1824  
10-1827
.002 
10-1825  
10-1828
.005 
10-1826  
10-1829
Sifton Solid Tappet 
Kit for Evo 1340 
includes four (4) 
solid tappets, stan-
dard size, with roll-
ers installed and 
four (4) adjustable 
pushrods.
VT No. 11-9630
11-0350
Sifton Chrome 1986-99 Tappet and Pushrod Assembly 
includes four tappet units, four pushrods and a tappet base set 
with screws and gaskets.
VT No.   Type
11-0350  Hydraulic
11-0356 Solid
11-0356