857
XL
V-Twin Piston Kits include
two cast alloy pistons, genuine
Hastings three piece ring set,
two wrist pins and four circlips.
V-Twin
Piston
Kit
12-0929
12-0949
Wrist Pin and Lock Kit.
VT No. Year/Model
11-0869 1957-85 XL
11-0872 1986-03 1100-883 XL
11-0873 1988-03 1200 XL
Wrist Pin Locks, 10 packs.
12-0929 1978-85
12-0949 1986-up
11-0869
Over 100,000 Kits Sold Since
1978!
883 to 1200cc Conversion Piston Kits include rings, wrist pins
and circlips.
1986-up.
*Note: 2009-up cylinders cannot be overbored. Requires the
purchase of 1200cc cylinder to be used with piston kits.
VT No. Item
Brand
Comp Ratio
11-1680 Piston Kit Standard Sifton
9.5:1
11-0852 Piston Kit Standard Sifton Moly Coated 9.5:1
11-1700 Piston Kit .005 OS Sifton Moly Coated 9.5:1
11-1680
11-1700
Top End Gasket Set fits Big Bore kits.
Head base gasket set with .040 gasket,
beaded, blue veloprene coated with 4
O-Rings. Fits 1986-2003.
VT No. 15-0393
Big Bore Pistons
Piston Sets use 22588-78 Pin Lock, VT No. 12-0929
Replica Type
COMP STD 9:1
900cc XL
3” Bore
STD 9:1
1000cc XL
3
3
/
16
” Bore
LC 8.4:1
1000cc XL
3
3
/
16
” Bore
STD
883cu V2
86-03 Evo
STD
1100cc V2
86-87 Evo
STD 86-03
1200cc V2
88-03 Evo
Dia.
STD
11-0200
11-0208
11-0300
11-0241
11-0246
11-9761
.005
11-0242
11-0247
11-9849
.010
11-0201
11-0209
11-0301
11-0243
11-0248
11-9767
.020
11-0202
11-0210
11-0302
11-0244
11-0249
11-9768
.030
11-0203
11-0211
11-0303
11-0245
11-9769
.040
11-0204
11-0212
11-0304
11-0440
11-0441
11-9712
.050
11-0205
11-0213
11-0305
.060
11-0206
11-0214
11-0306
.070
11-0207
11-0215
11-0430
The Keith Black 390 Hypereutectic alloy is cast in a perma-
nent steel mold which makes it possible to build a light weight
piston that makes more power, runs quietly, uses less fuel and
lasts longer than any other type of piston being made today. We
can now forget about running loose, noisy, oil-burning pistons.
The low heat transfer of the alloy keeps the skirts cool so piston
expansion is minimal.
The KB piston will make maximum power at 2 to 4 degrees less
total timing than conventional pistons. All KB pistons sets are
supplied with Hastings Moly Ring sets.
KB
PERFORMANCE
PISTONS
RING END
PISTON TO WALL
APPLICATION
GAP FACTOR
CLEARANCE
Street Normally Aspirated
.0065”
.00075”-.0015”
Street Nitrous or Supercharged
.0080”
.0015”-.0025”
Flat Track Gasoline
.0080”
.0010”-.0030”
Flat Track Alcohol
.0060”
.0010”-.0030”
Drag Gasoline
.0075”
.0010”-.0030”
Drag Alcohol
.0065”
.0010”-.0030”
Drag Supercharged or Nitrous Gas .0095”
.0015”-.0030”
Drag Supercharged Alcohol
.0085”
.0010”-.0030”
Drag Supercharged Fuel
.0115”
.0020”-.0040”
Note: It is important to use our ring end gap instructions to avoid ring butting.
Safe top ring end gaps can be found by multiplying the bore diameter by the
appropriate ring end gap factor from the adjoining chart.
Example: 3.5” bore “Street Normally Aspirated” = 3.5” bore x .0065” = .023” top
ring end gap.
Note: Second ring end gaps do not need extra clearance.
*Note: 2009-up cylnders cannot be over-
bored. Requires the purchase of 1200cc
cylinder to be used with piston kit.
Important Note:
Some items on this page may be emission-related parts subject to California or other emission control laws. Please see
note on Emission Page for important information regarding emission control regulatory compliance and warranty information.
Engine
1000cc
1200cc
1200cc
883
to1200cc
Sportster Evolution Evolution
Conversion
Model
XLH-XLCH
XL
XL 1988-03
XL
Years
1972-85
1988-03
w/High
Cams
C.I.D.
61”
74”
74”
74”
Bore
3.188”
3.498”
3.498”
3.498”
Stroke
3.812”
3.812”
3.812”
3.812”
Head Type
Dome
Flat Top
Flat Top
Dish
Cyl Height
5.330”
4.650”
4.650
4.650”
Comp. Ratio 8.2
9.0:1
8.9:1
10.0:1
Standard
11-2210
11-2245
11-2228
*
.005
11-2229
*
.010
11-2241
11-2212
11-2247
11-2230
*
.020
11-2242
11-2248
11-2231
*
.030
11-2243
11-2214
11-2232
*
.040
11-2215
11-2250
11-2233
*