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Motorcycle Storehouse - Engine & Performance

Browse engine & performance from Motorcycle Storehouse. Check the individual product page for specifications and fitment before ordering.

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£11.89
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£11.89
£10.63
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£10.63

MCS Breather Bolt Set – 2008–2017 Twin Cam; 2017–2025 M8

Low stock

Description 2 bolts used. 3/8-16 threaded. Hollow bolts. Long type. Allows connection of heads to breather hose. Used in combination with aftermark...

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£11.89
£10.63
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£112.48
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£112.48
£106.08
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£106.08

MCS Dual Breather Kit, Short Canister – 1993–2024 Big Twin

Out of stock

Description Chromed aluminum. Fits Evo; Twin Cam and M8 Big Twin models with head vents. Comes with two pairs of; 1/2-13 and 3/8-16 threaded; banjo...

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£112.48
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£106.08
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£25.41
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£25.41
£23.03
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£23.03

MCS Exhaust Flange and Retainer Kit. Black – 1984–2025 Big Twin; 1986–2022 XL…

Low stock

Description Steel. Complete kit in black wrinkle finish with everything you need. Includes 2 flanges (84-03 style/17-22 style) and 2 retainers. OEM...

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£25.41
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£25.41
£23.03
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£23.03
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MCS Gas Cap, Screw-in – 1983–1995 H-D Sold out
£46.08
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£46.08
£42.59
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£42.59

MCS Gas Cap Set, Screw-In – 1983–1995 H-D

Out of stock

MCS Gas Cap Set, Screw-in – 1983–1995 H-D Stainless steel; Vented + Non-vented; Right + left side Fitment 83-95 H-D (NU) (Excl. FLT) Product Detail...

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£46.08
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£46.08
£42.59
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£42.59
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MCS ''Red Handle'' Petcock, Down Outlet
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£53.75
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£53.75
£49.67
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£49.67

MCS ''Red Handle'' Petcock, Down Outlet

Low stock

Description Zinc plated steel; down outlet; 3/16" (4.8mm) fuel hose; with filter & reserve; 1/4" NPT thread. Note: Must be used with adapter nu...

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£53.75
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£49.67
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£23.96
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£23.39
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MCS Fitting, Oil Pressure Switch – 1958–1973 45" Sv; 1954–1976 K; KH; XL…

Low stock

Description 1 used Fitment 58-73 45" SV; 54-76 K; KH; XL Sportster (NU) Product Details Brand: MCS Category: MOTOR PARTS > CAM COVERS Unit: ...

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£23.96
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£23.39
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£29.10
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£28.95
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MCS High Speed Needle, Linkert Carb – L1950–1965 Panhead

Low stock

Description M-61; 74; 74b carbs Fitment L50-65 PANHEAD (NU) Product Details Brand: MCS Category: INTAKE > CARBS LINKERT REPL PARTS Unit: EA ...

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£29.10
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£28.95
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£16.53
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£16.14
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£16.14

MCS U-Nut, Intake Lever Stud Nut – 1936–1957 Ohv Big Twin

Low stock

Description Linkert carbs Fitment 36-57 OHV Big Twin (NU) Product Details Brand: MCS Category: INTAKE > CARBS LINKERT REPL PARTS Unit: PK P...

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£16.53
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£16.14
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MCS Sprocket Shaft Bearing Spacer Shim .098" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£18.18 - £18.18
£18.18
£19.15
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£19.15
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£5.39
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MCS Sprocket Shaft Bearing Spacer Shim .094" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£5.39
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£5.16
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£7.48
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£7.15
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MCS Sprocket Shaft Bearing Spacer Shim .098" – 1977–2003 XL Sportster

Low stock

Description Used to correct pre-load on the sprocket shaft bearing. Note: See 965410 for 9-piece shim assortment with .098" to .112" thick shims. F...

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£7.15
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MCS Sprocket Shaft Bearing Spacer Shim .100" – 1977–2003 XL Sportster

Low stock

Description Used to correct pre-load on the sprocket shaft bearing. Note: See 965410 for 9-piece shim assortment with .098" to .112" thick shims. F...

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MCS Sprocket Shaft Bearing Spacer Shim .120" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£18.18 - £18.18
£18.18
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£20.02
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MCS Sprocket Shaft Bearing Spacer Shim .114" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£20.02
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£19.15
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£20.02
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MCS Sprocket Shaft Bearing Spacer Shim .112" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£20.02
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£19.15
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£20.02
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MCS Sprocket Shaft Bearing Spacer Shim .110" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£20.02
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£19.15
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MCS Sprocket Shaft Bearing Spacer Shim .108" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£20.02
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£19.15
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MCS Sprocket Shaft Bearing Spacer Shim .106" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£18.18 - £18.18
£18.18
£19.15
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£19.15
MCS Slow Jet for Keihin Butterfly Carb. 50 – 1976–1989 Big Twin; 1976–1987 XL…
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£12.69
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£12.69
£11.78
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£11.78

MCS Slow Jet for Keihin Butterfly Carb. 60 – 1976–1989 Big Twin; 1976–1987 XL…

Out of stock

MCS Slow Jet for Keihin Butterfly Carb. 60 – 1976–1989 Big Twin; 1976–1987 XL… Low speed jet. OEM replacement reference 27318-85. Fitment 76-89 Big...

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£12.69
£12.69 - £12.69
£12.69
£11.78
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£11.78
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£12.69
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£12.69
£11.78
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£11.78

MCS Slow Jet for Keihin Butterfly Carb. 58 – 1976–1989 Big Twin; 1976–1987 XL…

Low stock

Description Low speed jet. OEM replacement reference 27310-85. Fitment 76-89 Big Twin; 76-87 XL Sportster. With Keihin butterfly carburetor (NU) Pr...

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£12.69
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£12.69
£11.78
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£11.78
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£61.40
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£61.40
£56.74
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£56.74

MCS Oil Filter Mount Bracket Kit. Black – 1992–1999 Evo Big Twin

Low stock

Description Black wrinkle finish. For OEM steel oil lines. OEM replacement reference 26378-92A. Note: Does not include oil filter. Fitment 92-99 Ev...

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£61.40
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£61.40
£56.74
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£62.20
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£62.15
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MCS Oil Pump Cover – 1950–1964 Big Twin

Low stock

Description Oil pump cover Fitment 50-64 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PARTS > OIL PUMP PARTS Unit: EA Product c...

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£62.20
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£62.15
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£2.59
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£2.15
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£2.15

Wiseco Piston Retaining Ring Set. Round Wire – Wiseco Pistons

Low stock

Description Round wire piston clips. 20mm. Fits all H-D models with Wiseco pistons (excl. Twin Cam and M8) Fitment Wiseco pistons Product Details ...

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£2.15
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MCS Replacement 80" Flathead Piston Kit. +.080" – 1937–1941 80" (1300cc) 3-7/16" Bore…

Out of stock

MCS Replacement 80" Flathead Piston Kit. +.080" – 1937–1941 80" (1300cc) 3-7/16" Bore… Cast aluminum pistons for a stock 1300cc Side Valve rebuild....

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£308.25 - £308.25
£308.25
£350.16
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