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P. 33
V-Twin
Piston
Kit
V-Twin Piston Kits include Piston Sets use 22588-78 Pin Lock, VT No. 12-0929
two cast alloy pistons, genuine Replica Type STD 9:1 LC 8.4:1 STD STD STD 86-03
COMP STD 9:1
Hastings three piece ring set, 900cc XL 1000cc XL 1000cc XL 883cu V2 1100cc V2 1200cc V2
3 16
3 16
two wrist pins and four circlips. Dia. 3” Bore 3 / ” Bore 3 / ” Bore 86-03 Evo 86-87 Evo 88-03 Evo
11-9761
11-0246
STD
11-0241
11-0200
11-0300
11-0208
Over 100,000 Kits Sold Since .005 11-0201 11-0209 11-0301 11-0242 11-0247 11-9849
.010
11-0243
11-9767
11-0248
1978! .020 11-0202 11-0210 11-0302 11-0244 11-0249 11-9768
.030 11-0203 11-0211 11-0303 11-0245 11-9769
11-0869 Wrist Pin and Lock Kit. .040 11-0204 11-0212 11-0304 11-0440 11-0441 11-9712
VT No. Year/Model .050 11-0205 11-0213 11-0305
11-0869 1957-85 XL .060 11-0206 11-0214 11-0306
11-0872 1986-03 1100-883 XL .070 11-0207 11-0215 11-0430
11-0873 1988-03 1200 XL Wrist Pin Locks, 10 packs.
12-0929 1978-85
12-0929 12-0949 12-0949 1986-up
Big Bore Pistons
883 to 1200cc Conversion Piston Kits include rings, wrist pins 11-1680 11-1700
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 XL
11-0852 Piston Kit Standard Sifton Moly Coated 9.5:1
11-1700 Piston Kit .005 OS Sifton Moly Coated 9.5:1
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
KB The Keith Black 390 Hypereutectic alloy is cast in a perma-
nent steel mold which makes it possible to build a light weight
PERFORMANCE piston that makes more power, runs quietly, uses less fuel and
PISTONS lasts longer than any other type of piston being made today. We
can now forget about running loose, noisy, oil-burning pistons.
*Note: 2009-up cylnders cannot be over- The low heat transfer of the alloy keeps the skirts cool so piston
bored. Requires the purchase of 1200cc
cylinder to be used with piston kit. expansion is minimal.
The KB piston will make maximum power at 2 to 4 degrees less
Engine 1000cc 1200cc 1200cc 883 total timing than conventional pistons. All KB pistons sets are
to1200cc supplied with Hastings Moly Ring sets.
Sportster Evolution Evolution Conversion RING END PISTON TO WALL
Model XLH-XLCH XL XL 1988-03 XL APPLICATION GAP FACTOR CLEARANCE
Years 1972-85 1988-03 w/High Street Normally Aspirated .0065” .00075”-.0015”
Cams Street Nitrous or Supercharged .0080” .0015”-.0025”
C.I.D. 61” 74” 74” 74” Flat Track Gasoline .0080” .0010”-.0030”
Bore 3.188” 3.498” 3.498” 3.498” Flat Track Alcohol .0060” .0010”-.0030”
Stroke 3.812” 3.812” 3.812” 3.812” Drag Gasoline .0075” .0010”-.0030”
Head Type Dome Flat Top Flat Top Dish Drag Alcohol .0065” .0010”-.0030”
Cyl Height 5.330” 4.650” 4.650 4.650” Drag Supercharged or Nitrous Gas .0095” .0015”-.0030”
Comp. Ratio 8.2 9.0:1 8.9:1 10.0:1 Drag Supercharged Alcohol .0085” .0010”-.0030”
Standard 11-2210 11-2245 11-2228* Drag Supercharged Fuel .0115” .0020”-.0040”
.005 11-2229* Note: It is important to use our ring end gap instructions to avoid ring butting.
.010 11-2241 11-2212 11-2247 11-2230* Safe top ring end gaps can be found by multiplying the bore diameter by the
.020 11-2242 11-2248 11-2231* appropriate ring end gap factor from the adjoining chart.
Example: 3.5” bore “Street Normally Aspirated” = 3.5” bore x .0065” = .023” top
.030 11-2243 11-2214 11-2232* ring end gap.
.040 11-2215 11-2250 11-2233* Note: Second ring end gaps do not need extra clearance.
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.
857
Piston
Kit
V-Twin Piston Kits include Piston Sets use 22588-78 Pin Lock, VT No. 12-0929
two cast alloy pistons, genuine Replica Type STD 9:1 LC 8.4:1 STD STD STD 86-03
COMP STD 9:1
Hastings three piece ring set, 900cc XL 1000cc XL 1000cc XL 883cu V2 1100cc V2 1200cc V2
3 16
3 16
two wrist pins and four circlips. Dia. 3” Bore 3 / ” Bore 3 / ” Bore 86-03 Evo 86-87 Evo 88-03 Evo
11-9761
11-0246
STD
11-0241
11-0200
11-0300
11-0208
Over 100,000 Kits Sold Since .005 11-0201 11-0209 11-0301 11-0242 11-0247 11-9849
.010
11-0243
11-9767
11-0248
1978! .020 11-0202 11-0210 11-0302 11-0244 11-0249 11-9768
.030 11-0203 11-0211 11-0303 11-0245 11-9769
11-0869 Wrist Pin and Lock Kit. .040 11-0204 11-0212 11-0304 11-0440 11-0441 11-9712
VT No. Year/Model .050 11-0205 11-0213 11-0305
11-0869 1957-85 XL .060 11-0206 11-0214 11-0306
11-0872 1986-03 1100-883 XL .070 11-0207 11-0215 11-0430
11-0873 1988-03 1200 XL Wrist Pin Locks, 10 packs.
12-0929 1978-85
12-0929 12-0949 12-0949 1986-up
Big Bore Pistons
883 to 1200cc Conversion Piston Kits include rings, wrist pins 11-1680 11-1700
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 XL
11-0852 Piston Kit Standard Sifton Moly Coated 9.5:1
11-1700 Piston Kit .005 OS Sifton Moly Coated 9.5:1
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
KB The Keith Black 390 Hypereutectic alloy is cast in a perma-
nent steel mold which makes it possible to build a light weight
PERFORMANCE piston that makes more power, runs quietly, uses less fuel and
PISTONS lasts longer than any other type of piston being made today. We
can now forget about running loose, noisy, oil-burning pistons.
*Note: 2009-up cylnders cannot be over- The low heat transfer of the alloy keeps the skirts cool so piston
bored. Requires the purchase of 1200cc
cylinder to be used with piston kit. expansion is minimal.
The KB piston will make maximum power at 2 to 4 degrees less
Engine 1000cc 1200cc 1200cc 883 total timing than conventional pistons. All KB pistons sets are
to1200cc supplied with Hastings Moly Ring sets.
Sportster Evolution Evolution Conversion RING END PISTON TO WALL
Model XLH-XLCH XL XL 1988-03 XL APPLICATION GAP FACTOR CLEARANCE
Years 1972-85 1988-03 w/High Street Normally Aspirated .0065” .00075”-.0015”
Cams Street Nitrous or Supercharged .0080” .0015”-.0025”
C.I.D. 61” 74” 74” 74” Flat Track Gasoline .0080” .0010”-.0030”
Bore 3.188” 3.498” 3.498” 3.498” Flat Track Alcohol .0060” .0010”-.0030”
Stroke 3.812” 3.812” 3.812” 3.812” Drag Gasoline .0075” .0010”-.0030”
Head Type Dome Flat Top Flat Top Dish Drag Alcohol .0065” .0010”-.0030”
Cyl Height 5.330” 4.650” 4.650 4.650” Drag Supercharged or Nitrous Gas .0095” .0015”-.0030”
Comp. Ratio 8.2 9.0:1 8.9:1 10.0:1 Drag Supercharged Alcohol .0085” .0010”-.0030”
Standard 11-2210 11-2245 11-2228* Drag Supercharged Fuel .0115” .0020”-.0040”
.005 11-2229* Note: It is important to use our ring end gap instructions to avoid ring butting.
.010 11-2241 11-2212 11-2247 11-2230* Safe top ring end gaps can be found by multiplying the bore diameter by the
.020 11-2242 11-2248 11-2231* appropriate ring end gap factor from the adjoining chart.
Example: 3.5” bore “Street Normally Aspirated” = 3.5” bore x .0065” = .023” top
.030 11-2243 11-2214 11-2232* ring end gap.
.040 11-2215 11-2250 11-2233* Note: Second ring end gaps do not need extra clearance.
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.
857
