515
M-6 Self Adjusting Chain
Tensioner fits Big Twin 4 and 5
speed models with wet clutch.
Replaces factory type detent
adjuster shoe assembly. Tensioner
kit includes all hardware and
instructions for complete conver-
sion. Fits 1965-2000.
M-6 Big
Twin Unit
HB-125 Big Twin Hydraulic Primary
Chain Tensioner features a steel flapper
valve to control the motion of the piston
which keeps the chain in continuous
adjustment as it is submerged in primary
housing oil. Fits 1965-2000.
Chain Tensioner Parts fits Big Twin models.
VT No. # OEM
Type
Year
All
Complete Kit
1965-84
All
Complete Kit
B-C-F-G Hardware Kit
Screw, 10 pack
Bolt, 5 pack
Hex Bolt, each
1965-00
Red Nylon Pad
18-3218 H 39990-65 Shoe Mount Bracket
1965-00
J 39998-65 Anchor Plate
Anchor Plate w/carriage bolt (K)
Carriage Bolt, 5 pack
*Note: Early style Hex Bolt, screws into 18-3223 Nut.
York Big Twin
Hydraulic Primary
Chain Tensionator
T M
features a hydraulic
valve which controls
the motion of the sub-
merged piston which
constantly keeps the
chain in tension for
1965-up Big Twins .
Primary Chain Tensioner
York Chain Adjuster Kits feature
automatic self adjusting by use of
spring loaded shoe.
VT No. Year
Primary Chain Nylon Liners.
VT No. OEM
Year
Model
BT
1966-84 BT
18-05581 Installed
