Skip to content
Find us Hours of Business Email Us Shipping Cookie policy Returns Terms & Conditions Privacy Policy Refunds

Dyna – Engine

Browse engine selected for Harley-Davidson Dyna motorcycles. The selection includes options relating to engine components, subject to current availability. Each product page provides the application and specification details needed to choose the right option.

Filters

Save 25% Save %
£173.03
£173.03 - £173.03
£173.03
£129.91
£129.91 - £129.91
£129.91

S&S Adj. Chromoly Pushrod Set. Evo B.t. Std Length – 1984–1999 Evo Big Twin with Standard…

Low stock

Description Used with engines that have standard 5.550" length cylinders. Pushrods are adjustable and can be used as hydraulic or run as solids. Pu...

View full details
£173.03
£173.03 - £173.03
£173.03
£129.91
£129.91 - £129.91
£129.91
Save 25% Save %
Sold out
£255.26
£255.26 - £255.26
£255.26
£252.77
£252.77 - £252.77
£252.77

Gardner-Westcott Head Bolt Kit, 12-Point – L1985–1991 Big Twin; 1986–1991 XL…

Out of stock

Description Head bolt kit, 12-point Fitment L85-91 Big Twin; 86-91 XL Sportster (NU) Product Details Brand: Gardner-Westcott Category: MOTOR PAR...

View full details
£255.26
£255.26 - £255.26
£255.26
£252.77
£252.77 - £252.77
£252.77
Sold out
Sold out
£135.39
£135.39 - £135.39
£135.39
£134.07
£134.07 - £134.07
£134.07

Gardner-Westcott 12-Point Head Bolt Kit. Chrome – 1992–2017 Big Twin; 1992–2022 XL…

Out of stock

Description Used without washers; like OEM. Fitment 92-17 Big Twin (Excl. M8); 92-22 XL Sportster; 08-12 XR1200 (NU) Product Details Brand: Gardn...

View full details
£135.39
£135.39 - £135.39
£135.39
£134.07
£134.07 - £134.07
£134.07
Sold out
£45.11 - £45.11
£45.11
£46.69
£46.69 - £46.69
£46.69

Jims Oil Pump Drive Shaft – 1970–1999 Big Twin

Low stock

Description Jims, oil pump drive shaft Fitment 70-99 Big Twin (NU) (Excl. TC) Product Details Brand: Jims Category: MOTOR PARTS > OIL PUMPS D...

View full details
£45.11 - £45.11
£45.11
£46.69
£46.69 - £46.69
£46.69
Save 4% Save %
£79.82
£79.82 - £79.82
£79.82
£76.32
£76.32 - £76.32
£76.32

MCS 41-99 Connecting Rod Roller Retainer Set – 1936–1999 Big Twin

In stock

Description Aluminum retainers. 36-86 B.T. style. Will not fit 00-up Big Twin with pressed-in crankpins. Repl. 24366-71 rear (2) and 24367-71 front...

View full details
£79.82
£79.82 - £79.82
£79.82
£76.32
£76.32 - £76.32
£76.32
Save 4% Save %
Sold out
£144.80 - £144.80
£144.80
£152.75
£152.75 - £152.75
£152.75

Jims L81-99 Crankpin, 180 Degree. Std – L1981–1999 Big Twin

Out of stock

Description Standard O.D. 1.2495". 3-hole oil design on 180° for improved lubrication of the bearing diameter. Use Jims 978252 crankpin nuts. Use 5...

View full details
£144.80 - £144.80
£144.80
£152.75
£152.75 - £152.75
£152.75
Sold out
£91.83 - £91.83
£91.83
£95.05
£95.05 - £95.05
£95.05

Jims Oil Pump Drive Shaft, +.005" Od – 1970–1999 Big Twin

Low stock

Description ÿ Fitment 70-99 Big Twin (NU) (Excl. TC) Product Details Brand: Jims Category: MOTOR PARTS > OIL PUMPS DRIVE SHAFTS Unit: EA Pr...

View full details
£91.83 - £91.83
£91.83
£95.05
£95.05 - £95.05
£95.05
Sold out
£189.46 - £189.46
£189.46
£199.86
£199.86 - £199.86
£199.86

Jims L81-99 Crankpin Kit. Std – L1981–1999 Big Twin

Out of stock

Description Incl. nuts & key. Standard O.D. 1.2495". 3-hole oil design. This convenient precision kit includes a crankpin; two crankpin nuts an...

View full details
£189.46 - £189.46
£189.46
£199.86
£199.86 - £199.86
£199.86
Sold out
Save 7% Save %
£151.47
£151.47 - £151.47
£151.47
£141.24
£141.24 - £141.24
£141.24

S&S Head Bolt Kit – 1991–2017 Big Twin; 1991–2003 XL…

Low stock

Description 100; 107; 79 retro; 103 Evo engines; 116/124 Twin Cam with OEM heads Fitment 91-17 Big Twin (Excl. 2017 M8); 91-03 XL Sportster with 5"...

View full details
£151.47
£151.47 - £151.47
£151.47
£141.24
£141.24 - £141.24
£141.24
Save 7% Save %
£334.69 - £334.69
£334.69
£340.70
£340.70 - £340.70
£340.70

Kb Performance Piston 88" to 95" Twin Cam Piston Kit. Std – 1999–2006 88" Twin Cam

Low stock

Description 88" (3-3/4") to 95" (3-7/8") big bore conversion forged piston set. 9.25:1 CR with 85cc head. Piston weight 350gr. Piston pin weight 89...

View full details
£334.69 - £334.69
£334.69
£340.70
£340.70 - £340.70
£340.70
£334.69 - £334.69
£334.69
£340.70
£340.70 - £340.70
£340.70

Kb Performance Piston 96" to 103" Twin Cam Piston Kit. Std – 2007–2017 96" Twin Cam

Low stock

Description Forged piston set. For 96" (3-3/4") to 103" (3-7/8") big bore conversion. 9.5:1 CR with stock 85cc head. Piston weight 335gr. Piston pi...

View full details
£334.69 - £334.69
£334.69
£340.70
£340.70 - £340.70
£340.70
£233.68 - £233.68
£233.68
£249.75
£249.75 - £249.75
£249.75

Kb Performance Piston 96" to 103" Big Bore Piston Set. Std – 2007–2017 Twin Cam

Low stock

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"...

View full details
£233.68 - £233.68
£233.68
£249.75
£249.75 - £249.75
£249.75
£319.16 - £319.16
£319.16
£324.89
£324.89 - £324.89
£324.89

Kb Performance Piston 88" to 95" Big Bore Piston Set. Std – 1999–2006 Twin Cam

Low stock

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
£319.16 - £319.16
£319.16
£324.89
£324.89 - £324.89
£324.89
Sold out
£311.07 - £311.07
£311.07
£316.66
£316.66 - £316.66
£316.66

Kb Performance Piston 1340 Evo B.t. Forged Piston Kit. Std – 1984–1999 Evo Big Twin

Out of stock

Description Forged piston set. 9.5:1 CR with 80cc head. Piston weight 365gr. Piston pin weight 97gr. Piston pin dia. .792" / offset. Head type: Dom...

View full details
£311.07 - £311.07
£311.07
£316.66
£316.66 - £316.66
£316.66
Sold out
£306.43 - £306.43
£306.43
£311.93
£311.93 - £311.93
£311.93

Kb Performance Piston 88" to 95" Big Bore Piston Set. +.010" – 1999–2006 Twin Cam a/B

Low stock

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
£306.43 - £306.43
£306.43
£311.93
£311.93 - £311.93
£311.93
£306.43 - £306.43
£306.43
£311.93
£311.93 - £311.93
£311.93

Kb Performance Piston 88" to 95" Big Bore Piston Set. Std – 1999–2006 Twin Cam a/B

Low stock

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
£306.43 - £306.43
£306.43
£311.93
£311.93 - £311.93
£311.93
£255.33 - £255.33
£255.33
£259.90
£259.90 - £259.90
£259.90

Kb Performance Piston 1340cc Evo B.t. Pop-Up Piston Kit. Std – 1984–1999 Evo Big Twin

Low stock

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
£255.33 - £255.33
£255.33
£259.90
£259.90 - £259.90
£259.90
£242.17 - £242.17
£242.17
£246.51
£246.51 - £246.51
£246.51

Kb Performance Piston 1340cc Evo B.t. Piston Kit. Std – 1984–1999 Evo Big Twin

Low stock

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
£242.17 - £242.17
£242.17
£246.51
£246.51 - £246.51
£246.51
£242.17 - £242.17
£242.17
£246.51
£246.51 - £246.51
£246.51

Kb Performance Piston 1340cc Evo B.t. Piston Kit. +.005" – 1984–1999 Evo Big Twin

Low stock

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
£242.17 - £242.17
£242.17
£246.51
£246.51 - £246.51
£246.51
£255.33 - £255.33
£255.33
£259.90
£259.90 - £259.90
£259.90

Kb Performance Piston 1340cc Evo B.t. Pop-Up Piston Kit. Std – 1984–1999 Evo Big Twin

Low stock

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
£255.33 - £255.33
£255.33
£259.90
£259.90 - £259.90
£259.90
£255.33 - £255.33
£255.33
£259.90
£259.90 - £259.90
£259.90

Kb Performance Piston 1340cc Evo B.t. Pop-Up Piston Kit. +.005" – 1984–1999 Evo Big Twin

Low stock

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
£255.33 - £255.33
£255.33
£259.90
£259.90 - £259.90
£259.90
£6.90 - £6.90
£6.90
£6.90 - £6.90
£6.90

MCS Valve Key Set – 2005–2017 Twin Cam; 2004–2022 XL…

Low stock

Description OEM style replacement valve keepers for stock 7mm diameter valves. Sold in set of 8 to service one engine. Fitment 05-17 Twin Cam (Excl...

View full details
£6.90 - £6.90
£6.90
£6.90 - £6.90
£6.90
£10.40 - £10.40
£10.40
£10.40 - £10.40
£10.40

MCS Valve Key Set – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Low stock

Description OEM style replacement valve keepers. Sold in set of 8 to service one engine. Repl. 18229-83A. Fitment 84-99 Evo Big Twin; 99-04 Twin Ca...

View full details
£10.40 - £10.40
£10.40
£10.40 - £10.40
£10.40
Save 0% Save %
£252.98
£252.98 - £252.98
£252.98
£252.32
£252.32 - £252.32
£252.32

Andrews Ev-Sc Cam .495" Lift – 1984–1999 Evo Big Twin with Supercharger

Low stock

Description .495" valve lift. For supercharged engines. Basically an EV27 cam with timing set for superchargers. Fitment 84-99 Evo Big Twin with su...

View full details
£252.98
£252.98 - £252.98
£252.98
£252.32
£252.32 - £252.32
£252.32
Save 0% Save %

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare