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11/32"

Fast Eddy Co, Valve guide Drivers

#718699

Stock:Yes

3/8"

Fast Eddy Co, Valve guide Drivers

#718698

Stock:Yes

5/16"

Fast Eddy Co, Valve guide Drivers

#718700

Stock:Yes

Premium valve Guide Drivers, Set of 3. Sizes: 3/8"

Fast Eddy Co, Valve guide Drivers

#718697

Stock:Yes

Tapered extra thin 3/8" (9.53mm) 4130 chromoly heat treated pushrods with 3/8-24 nut with 24 threads per inch. With .145" (extra thick) wall thickness, recommended when extreme valve spring pressures are used. Manufactured with precision concentricity. The individual length intake & exhaust pushrods assures minimizing adjustment extension for increased stiffness and rigidity for maximum valve lift under high RPM loads. Pushrods can be adjusted 0.225" longer than stock to accommodate longer cylinder and smaller base circle camshafts.

• Maintain maximum valve lift!
• Increased stiffness and column rigidity maximizing valve-train stability, increasing engine RPM horsepower and torque output.
• Adjustable pushrods are tapered 3/8" 4130 chrome moly adjustable pushrods, use a minimal adjustment parameter eliminating flex and loss of valve train-stability problems associated with most adjustable pushrods.
• Individual length intake & exhaust pushrods keep the adjustment extension to a minimum.
• Designed to exceed the needs of performance engines using larger lift camshafts and high spring pressures, while maintaining proper and critical oil flow to top end valve gear.
• RACE SERIES have 24 threads per inch with 0.145" wall thickness - recommended when extreme valve-spring pressures are used.
• Designed for use with hydraulic or solid lifters and street or race engines.
• Can not be installed without removing the rocker covers, arms and supports.
• Feuling pushrods can be used with the factory pushrod tubes.
• Made in the U.S.A.

Feuling, Race Series adjustable chromoly pushrod set

#707310

Stock:Yes

OEM replacement reference 62700182

Oil line, cyl. head oil return

#569029

Stock:Yes

Black with highlighted fins. This is a quality 4.25" bolt-on big bore cylinder kit for 107" M8 models with stock 3.937" bore x 4.375" stroke. Kit can be used with a 4.25" Wiseco big bore piston & ring kit. Cylinders include dowel pins and are marked for correct front/rear installation. Capacity will increase from stock 107" (106.52" / 1746cc) to a hefty 124" (124.13 / 2034cc) but still installs without crankcase machining. Flywheel re-balancing is not required. Compression ratio is 1:11 and is compatible with the stock camshaft. Includes installation instructions.
Note: Order 576555 Wiseco 4.25" bore conversion piston & ring kit & 576556 Wiseco gasket kit separately.

107" to 124" 4.25" big bore conversion cylinders for M8

#709141

Stock:No

OEM style replacement chrome plated rocker covers. Manufactured from forged aluminum.
OEM replacement reference 25700409 (chrome), 25700520 (black)

M8 Rocker box cover set. Chrome

#700791

Stock:Yes

High compression.
Black cylinders with highlighted fins.
With +8.5cc piston dome.
Compression ratio 12.7:1 for 132" and 13.1:1 for 136" with stock 88cc heads.
Compression ratio 12.1:1 for 132" and 12.3:1 for 136" with SE Extreme Port 94cc heads.
Largest possible 4.320" bore bolt-in big bore kit.
132" (2162cc) is achieved when used with stock 114" flywheels.
136" (2222cc) is achieved when used with S&S 923270 4-5/8" stroker flywheels.
Works with stock crankcases, case boring is not required, stock heads and retains stock engine height. Kit includes a forged 4.320" big bore forged piston kit, 4.320" big bore cylinders, 2 MLS (Multi-Layer-Steel) .040" head gaskets, 2 cylinder base gaskets, 4 cylinder dowels, exhaust gaskets and an S&S cubic inch cam cover badge. Black powder coated finish to match the OEM finish.
Note: For the 132" kit S&S measured 135.51HP and 145.83 torque with stock heads, a 550 cam, stock throttle body and a high flow Stealth air cleaner kit.
Note: Tuning of fuel injection and ignition may be required.
Note: S&S advises 576972 S&S head bolt kit for all big bore applications.
Note: 136" is not compatible with OEM 4-5/8" stroke flywheels, must use S&S 923270 4-5/8" stroker flywheels.
Note: Not compatible with 107" (4.375" stroke) engines.

S&S, M8 132/136" big bore cylinder & piston kit. HC +8.5cc

#709938

Stock:Yes

High compression.
Black cylinders without highlighted fins.
With +8.5cc piston dome.
Compression ratio 12.7:1 for 132" and 13.1:1 for 136" with stock 88cc heads.
Compression ratio 12.1:1 for 132" and 12.3:1 for 136" with SE Extreme Port 94cc heads.
Largest possible 4.320" bore bolt-in big bore kit.
132" (2162cc) is achieved when used with stock 114" flywheels.
136" (2222cc) is achieved when used with S&S 923270 4-5/8" stroker flywheels.
Works with stock crankcases, case boring is not required, stock heads and retains stock engine height. Kit includes a forged 4.320" big bore forged piston kit, 4.320" big bore cylinders, 2 MLS (Multi-Layer-Steel) .040" head gaskets, 2 cylinder base gaskets, 4 cylinder dowels, exhaust gaskets and an S&S cubic inch cam cover badge. Black powder coated finish to match the OEM finish.
Note: For the 132" kit S&S measured 135.51HP and 145.83 torque with stock heads, a 550 cam, stock throttle body and a high flow Stealth air cleaner kit.
Note: Tuning of fuel injection and ignition may be required.
Note: S&S advises 576972 S&S head bolt kit for all big bore applications.
Note: 136" is not compatible with OEM 4-5/8" stroke flywheels, must use S&S 923270 4-5/8" stroker flywheels.
Note: Not compatible with 107" (4.375" stroke) engines.

S&S, M8 132/136" big bore cylinder & piston kit. HC +8.5cc

#709939

Stock:Yes

High compression.
Black cylinders without highlighted fins.
With 0cc piston dome.
Compression ratio 11.7:1 for 132" and 12.1:1 for 136" with stock 88cc heads.
Compression ratio 11.1:1 for 132" and 11.4:1 for 136" with SE Extreme Port 94cc heads.
Largest possible 4.320" bore bolt-in big bore kit.
132" (2162cc) is achieved when used with stock 114" flywheels.
136" (2222cc) is achieved when used with S&S 923270 4-5/8" stroker flywheels.
Works with stock crankcases, case boring is not required, stock heads and retains stock engine height. Kit includes a forged 4.320" big bore forged piston kit, 4.320" big bore cylinders, 2 MLS (Multi-Layer-Steel) .040" head gaskets, 2 cylinder base gaskets, 4 cylinder dowels, exhaust gaskets and an S&S cubic inch cam cover badge. Black powder coated finish to match the OEM finish.
Note: For the 132" kit S&S measured 135.51HP and 145.83 torque with stock heads, a 550 cam, stock throttle body and a high flow Stealth air cleaner kit.
Note: Tuning of fuel injection and ignition may be required.
Note: S&S advises 576972 S&S head bolt kit for all big bore applications.
Note: 136" is not compatible with OEM 4-5/8" stroke flywheels (121" engines), must use S&S 923270 4-5/8" stroker flywheels.
Note: Not compatible with 107" (4.375" stroke) engines.

S&S, M8 132/136" big bore cylinder & piston kit. HC 0cc

#709936

Stock:Yes

High compression.
Black Granite cylinders with highlighted fins.
With +8.5cc piston dome.
Compression ratio 12.7:1 for 132" and 13.1:1 for 136" with stock 88cc heads.
Compression ratio 12.1:1 for 132" and 12.3:1 for 136" with SE Extreme Port 94cc heads.
Largest possible 4.320" bore bolt-in big bore kit.
132" (2162cc) is achieved when used with stock 114" flywheels.
136" (2222cc) is achieved when used with S&S 923270 4-5/8" stroker flywheels.
Works with stock crankcases, case boring is not required, stock heads and retains stock engine height. Kit includes a forged 4.320" big bore forged piston kit, 4.320" big bore cylinders, 2 MLS (Multi-Layer-Steel) .040" head gaskets, 2 cylinder base gaskets, 4 cylinder dowels, exhaust gaskets and an S&S cubic inch cam cover badge. Black powder coated finish to match the OEM finish.
Note: For the 132" kit S&S measured 135.51HP and 145.83 torque with stock heads, a 550 cam, stock throttle body and a high flow Stealth air cleaner kit.
Note: Tuning of fuel injection and ignition may be required.
Note: S&S advises 576972 S&S head bolt kit for all big bore applications.
Note: 136" is not compatible with OEM 4-5/8" stroke flywheels, must use S&S 923270 4-5/8" stroker flywheels.
Note: Not compatible with 107" (4.375" stroke) engines.

Note: Special Order Product only. To order please contact your MCS sales representative.

S&S, M8 132/136" big bore cylinder & piston kit. HC +8.5cc

#709940

Stock:No

Sold in set of 2. With CNC machined gasket sealing surface for a perfect seal. Installs as a direct replacement for the OEM rocker covers.
Esteves Motorcycle Design designed these rockers covers in the classic Knucklehead rocker cover design (1936-1947), ready to time-warp your bike straight back to the 30's. Manufactured from genuine sand-cast aluminum for that right old-time look. Fits as a direct replacement for the OEM rocker covers.

Note: Sold in pairs. Order one for one bike.

EMD, 'Knucklehead style' rocker cover set. Raw

#721433

Stock:Yes

Sold in set of 2. With CNC machined gasket sealing surface for a perfect seal. Installs as a direct replacement for the OEM rocker covers.
Esteves Motorcycle Design designed these rockers covers in the classic Knucklehead rocker cover design (1936-1947), ready to time-warp your bike straight back to the 30's. Manufactured from genuine sand-cast aluminum for that right old-time look. Fits as a direct replacement for the OEM rocker covers.

Note: Sold in pairs. Order one for one bike.

EMD, 'Knucklehead style' rocker cover set. Black cut

#721434

Stock:Yes

Sold in set of 2. With CNC machined gasket sealing surface for a perfect seal. Installs as a direct replacement for the OEM rocker covers.
Esteves Motorcycle Design designed these rockers covers in the classic Knucklehead rocker cover design (1936-1947), ready to time-warp your bike straight back to the 30's. Manufactured from genuine sand-cast aluminum for that right old-time look. Fits as a direct replacement for the OEM rocker covers.

Note: Sold in pairs. Order one for one bike.

EMD, 'Knucklehead style' rocker cover set. Black cut

#721436

Stock:Yes

Sold in set of 2. With CNC machined gasket sealing surface for a perfect seal. Installs as a direct replacement for the OEM rocker covers.
Esteves Motorcycle Design designed these rockers covers in the classic Knucklehead rocker cover design (1936-1947), ready to time-warp your bike straight back to the 30's. Manufactured from genuine sand-cast aluminum for that right old-time look. Fits as a direct replacement for the OEM rocker covers.

Note: Sold in pairs. Order one for one bike.

EMD, 'Knucklehead style' rocker cover set. Raw

#721435

Stock:Yes

Sold in set of 2. With CNC machined gasket sealing surface for a perfect seal. Installs as a direct replacement for the OEM rocker covers.
Esteves Motorcycle Design designed these rockers covers in the classic Knucklehead rocker cover design (1936-1947), ready to time-warp your bike straight back to the 30's. Manufactured from genuine sand-cast aluminum for that right old-time look. Fits as a direct replacement for the OEM rocker covers.

Note: Sold in pairs. Order one for one bike.

EMD, 'Knucklehead style' rocker cover set. Raw

#721437

Stock:Yes

Sold in set of 2. With CNC machined gasket sealing surface for a perfect seal. Installs as a direct replacement for the OEM rocker covers.
Esteves Motorcycle Design designed these rockers covers in the classic Knucklehead rocker cover design (1936-1947), ready to time-warp your bike straight back to the 30's. Manufactured from genuine sand-cast aluminum for that right old-time look. Fits as a direct replacement for the OEM rocker covers.

Note: Sold in pairs. Order one for one bike.

EMD, 'Knucklehead style' rocker cover set. Black cut

#721438

Stock:Yes

High compression.
Black cylinders with highlighted fins.
With 0cc piston dome.
Compression ratio 11.7:1 for 132" and 12.1:1 for 136" with stock 88cc heads.
Compression ratio 11.1:1 for 132" and 11.4:1 for 136" with SE Extreme Port 94cc heads.
Largest possible 4.320" bore bolt-in big bore kit.
132" (2162cc) is achieved when used with stock 114" flywheels.
136" (2222cc) is achieved when used with S&S 923270 4-5/8" stroker flywheels.
Works with stock crankcases, case boring is not required, stock heads and retains stock engine height. Kit includes a forged 4.320" big bore forged piston kit, 4.320" big bore cylinders, 2 MLS (Multi-Layer-Steel) .040" head gaskets, 2 cylinder base gaskets, 4 cylinder dowels, exhaust gaskets and an S&S cubic inch cam cover badge. Black powder coated finish to match the OEM finish.
Note: For the 132" kit S&S measured 135.51HP and 145.83 torque with stock heads, a 550 cam, stock throttle body and a high flow Stealth air cleaner kit.
Note: Tuning of fuel injection and ignition may be required.
Note: S&S advises 576972 S&S head bolt kit for all big bore applications.
Note: 136" is not compatible with OEM 4-5/8" stroke flywheels, must use S&S 923270 4-5/8" stroker flywheels.
Note: Not compatible with 107" (4.375" stroke) engines.

S&S, M8 132/136" big bore cylinder & piston kit. HC 0cc

#709935

Stock:Yes

Manufactured from blue anodized 6061 aluminum. A direct upgrade replacement for the stock breather assembly. Inside you will find the proprietary Labyrinth design to significantly reduces oil pass-through, keeping your engine running cleaner and smoother while burning less oil. The S&S dual O-ring design offers a superior seal, minimizes leaks and maximizes performance. Maintenance-free since the mesh filter elements and the umbrella valves is no longer required.
- 6061 aluminum construction
- S&S blue anodized finish
- Dual O-Ring for a improved sealing
- Labyrinth design to significantly reduce oil pass-through
- Less oil carry-over to the intake
- Improved durability when compared to the stock breather assemblies
- No more umbrella valve and mesh filter element so maintenance-free

S&S, billet head breather kit for Twin Cam

#709308

Stock:Yes