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Browse this smaller range of Dyna – Engine & Gaskets. Check exact model-year fitment and specifications on each product page.

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Original price £245.35 - Original price £245.35
Original price £245.35
£249.75
£249.75 - £249.75
Current price £249.75

KB Performance Piston KB Performance, 96" to 103" Big Bore Piston Set. +.020" for 07-17 Twin Cam - KB409C020

Available

Description For 96" to 103" (3 3/4" to 3 7/8") big bore conversions. Used with stock heads and cylinders. By boring the stock cylinders from 3-3/4"...

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Original price £245.35 - Original price £245.35
Original price £245.35
£249.75
£249.75 - £249.75
Current price £249.75
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. +.040" for 99-06 Twin Cam A/B - KB411040

Available

Description 88" to 95" big bore conversion. Used with stock heads and cylinders. By boring the stock cylinders from 3-3/4" to 3-7/8" big bore size ...

View full details
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. +.030" for 99-06 Twin Cam A/B - KB411030

Available

Description 88" to 95" big bore conversion. Used with stock heads and cylinders. By boring the stock cylinders from 3-3/4" to 3-7/8" big bore size ...

View full details
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. +.010" for 99-06 Twin Cam A/B - KB411010

Available

Description 88" to 95" big bore conversion. Used with stock heads and cylinders. By boring the stock cylinders from 3-3/4" to 3-7/8" big bore size ...

View full details
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. +.005" for 99-06 Twin Cam A/B - KB411005

Available

Description 88" to 95" big bore conversion. Used with stock heads and cylinders. By boring the stock cylinders from 3-3/4" to 3-7/8" big bore size ...

View full details
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. Std for 99-06 Twin Cam - KB411STD

Available

Description 88" to 95" big bore conversion. Used with stock heads and cylinders. By boring the stock cylinders from 3-3/4" to 3-7/8" big bore size ...

View full details
Original price £319.16 - Original price £319.16
Original price £319.16
£324.89
£324.89 - £324.89
Current price £324.89
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. +.030" for 99-06 Twin Cam A/B - KB348030

Available

Description 88" to 95" big bore conversion kit. Used with stock heads and cylinders; 3-3/4" bore and 4.938" long cylinders. By boring the stock cyl...

View full details
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. +.020" for 99-06 Twin Cam A/B - KB348020

Available

Description 88" to 95" big bore conversion kit. Used with stock heads and cylinders; 3-3/4" bore and 4.938" long cylinders. By boring the stock cyl...

View full details
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. +.010" for 99-06 Twin Cam A/B - KB348010

Available

Description 88" to 95" big bore conversion kit. Used with stock heads and cylinders; 3-3/4" bore and 4.938" long cylinders. By boring the stock cyl...

View full details
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93

KB Performance Piston KB Performance, 88" to 95" Big Bore Piston Set. STD for 99-06 Twin Cam A/B - KB348STD

Available

Description 88" to 95" big bore conversion kit. Used with stock heads and cylinders; 3-3/4" bore and 4.938" long cylinders. By boring the stock cyl...

View full details
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93
Original price £306.46 - Original price £306.46
Original price £306.46
£311.93
£311.93 - £311.93
Current price £311.93

KB Performance Piston KB Performance, 3-5/8" Big Bore Piston Kit. +.030" for Harley-Davidson 1948-1984 Big Twin with 3-5/8 Big Bore Cylinders and Strokes From 4-1/4" to 4-3/4" (88" to 98" Engines) - KB294030

Available

Description 3-5/8" big bore piston set. Used with 3 5/8" big bore cylinders with 5.330" (stock) to 5.530" (+.200") length. Use with 4-1/4" stock st...

View full details
Original price £306.46 - Original price £306.46
Original price £306.46
£311.93
£311.93 - £311.93
Current price £311.93
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93

KB Performance Piston KB Performance, 3-5/8" Big Bore Piston Kit. +.020" for Harley-Davidson 1948-1984 Big Twin with 3-5/8 Big Bore Cylinders and Strokes From 4-1/4" to 4-3/4" (88" to 98" Engines) - KB294020

Available

Description 3-5/8" big bore piston set. Used with 3 5/8" big bore cylinders with 5.330" (stock) to 5.530" (+.200") length. Use with 4-1/4" stock st...

View full details
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93

Kb Performance Piston 3-5/8" Big Bore Piston Kit. Std - 1948-1984 Big Twin with 3-5/8 Big Bore…

Available

Description 3-5/8" big bore piston set. Used with 3 5/8" big bore cylinders with 5.330" (stock) to 5.530" (+.200") length. Use with 4-1/4" stock st...

View full details
Original price £306.43 - Original price £306.43
Original price £306.43
£311.93
£311.93 - £311.93
Current price £311.93
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.040" for Harley-Davidson 1984-1999 Evo Big Twin - KB266040

Available

Description Pop-up high compression. 10.5:1 CR. Piston weight 360gr. Piston pin weight 97gr. Head type: Dome 0.200". Dome -18cc. Compression height...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.030" for Harley-Davidson 1984-1999 Evo Big Twin - KB266030

Available

Description Pop-up high compression. 10.5:1 CR. Piston weight 360gr. Piston pin weight 97gr. Head type: Dome 0.200". Dome -18cc. Compression height...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.010" for Harley-Davidson 1984-1999 Evo Big Twin - KB266010

Available

Description Pop-up high compression. 10.5:1 CR. Piston weight 360gr. Piston pin weight 97gr. Head type: Dome 0.200". Dome -18cc. Compression height...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.005" for Harley-Davidson 1984-1999 Evo Big Twin - KB266005

Available

Description Pop-up high compression. 10.5:1 CR. Piston weight 360gr. Piston pin weight 97gr. Head type: Dome 0.200". Dome -18cc. Compression height...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. STD for Harley-Davidson 1984-1999 Evo Big Twin - KB266STD

Available

Description Pop-up high compression. 10.5:1 CR. Piston weight 360gr. Piston pin weight 97gr. Head type: Dome 0.200". Dome -18cc. Compression height...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.040" for Harley-Davidson 1984-1999 Evo Big Twin - KB305040

Available

Description Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". ...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.030" for Harley-Davidson 1984-1999 Evo Big Twin - KB305030

Available

Description Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". ...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.020" for Harley-Davidson 1984-1999 Evo Big Twin - KB305020

Available

Description Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". ...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.010" for Harley-Davidson 1984-1999 Evo Big Twin - KB305010

Available

Description Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". ...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90

KB Performance Piston KB Performance, 1340cc Evo B.T. Pop-Up Piston Kit. +.005" for Harley-Davidson 1984-1999 Evo Big Twin - KB305005

Available

Description Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". ...

View full details
Original price £255.33 - Original price £255.33
Original price £255.33
£259.90
£259.90 - £259.90
Current price £259.90
Original price £242.17 - Original price £242.17
Original price £242.17
£246.51
£246.51 - £246.51
Current price £246.51

KB Performance Piston KB Performance, 1340cc Evo B.T. Piston Kit. +.040" for Harley-Davidson 1984-1999 Evo Big Twin - KB258040

Available

Description 8.5:1 CR. Piston weight 350gr. Piston pin weight 97gr. Head type: Flat top. Dome +1.5cc. Compression height 1.375". Bore 3.4980". Strok...

View full details
Original price £242.17 - Original price £242.17
Original price £242.17
£246.51
£246.51 - £246.51
Current price £246.51

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