Crankcase & Bottom End - M8 | Birds Bitz https://birdsbitz.com.au/product-category/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ Aftermarket Harley Davidson Parts Store | Motorcycle Parts Brisbane | Birds Bitz Tue, 14 Jul 2026 15:09:50 +0000 en-AU hourly 1 https://wordpress.org/?v=6.8.5 https://birdsbitz.com.au/wp-content/uploads/2020/08/logo-150x110-1-100x100.png Crankcase & Bottom End - M8 | Birds Bitz https://birdsbitz.com.au/product-category/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ 32 32 Cycle Pro Llc Oil Pressure Switch. Fits Milwaukee-Eight 2017up. https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/cycle-pro-llc-oil-pressure-switch-fits-milwaukee-eight-2017up/ Tue, 23 Sep 2025 00:52:10 +0000 https://birdsbitz.com.au/online-shop/uncategorised/cycle-pro-llc-oil-pressure-switch-fits-milwaukee-eight-2017up/ * Replaces OEM # 71400112 *“On Line Shopping Only

The post Cycle Pro Llc Oil Pressure Switch. Fits Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> * Replaces OEM # 71400112

*“On Line Shopping Only

The post Cycle Pro Llc Oil Pressure Switch. Fits Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> Standard Motorcycle Products Oil Pressure Switch. Fits Sportster 1977-2021. https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/standard-motorcycle-products-oil-pressure-switch-fits-sportster-1977-2021/ Tue, 23 Sep 2025 00:52:10 +0000 https://birdsbitz.com.au/online-shop/uncategorised/standard-motorcycle-products-oil-pressure-switch-fits-sportster-1977-2021/ * Replaces OEM # 26554-77 *“On Line Shopping Only

The post Standard Motorcycle Products Oil Pressure Switch. Fits Sportster 1977-2021. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> * Replaces OEM # 26554-77

*“On Line Shopping Only

The post Standard Motorcycle Products Oil Pressure Switch. Fits Sportster 1977-2021. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S 4-3/8in. Stroke Flywheel Assembly. Fits 107ci Milwaukee-Eight 2017up. https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-4-3-8in-stroke-flywheel-assembly-fits-107ci-milwaukee-eight-2017up/ Tue, 23 Sep 2025 00:02:20 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-4-3-8in-stroke-flywheel-assembly-fits-107ci-milwaukee-eight-2017up/ The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.* […]

The post S&S 4-3/8in. Stroke Flywheel Assembly. Fits 107ci Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.

* 4-3/8in. Stroke (Stock in 107ci engines)

* Tapered Wristpin for OEM style pistons

* Heat Treated 4140 Material is harder & more than twice as strong as stock

* Stronger assembly eliminates need to weld crankpin

* S&S High Strength Connecting Rods are designed with Finite Element Analysis to eliminate weak spots and handle more power!

* Perfect for Gear Drive Cams

* Consistent balance & precision machining

* Capable of higher RPM – More available power!

* Includes Balancer Gear (can be removed)

* Replaces OEM # 24100057

Proudly Made in the USA by S&S Cycle !

Tech Tips:-

The balancer gear CANbe removed!

Suggest Additional Purchase:

Main Bearing x 2 SS310-0593

*“On Line Shopping Only

The post S&S 4-3/8in. Stroke Flywheel Assembly. Fits 107ci Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S 4-1/2in. Stroke Flywheel Assembly. Fits 114ci & 117ci Milwaukee-Eight 2017up. https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-4-1-2in-stroke-flywheel-assembly-fits-114ci-117ci-milwaukee-eight-2017up/ Tue, 23 Sep 2025 00:02:20 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-4-1-2in-stroke-flywheel-assembly-fits-114ci-117ci-milwaukee-eight-2017up/ The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.* […]

The post S&S 4-1/2in. Stroke Flywheel Assembly. Fits 114ci & 117ci Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.

* 4-1/2in. Stroke (Stock in 114ci engines)

* Tapered Wristpin for OEM style pistons & compatible with S&S 128ci kit

* Heat Treated 4140 Material is harder & more than twice as strong as stock

* Stronger assembly eliminates need to weld crankpin

* S&S High Strength Connecting Rods are designed with Finite Element Analysis to eliminate weak spots and handle more power!

* Perfect for Gear Drive Cams

* Consistent balance & precision machining

* Capable of higher RPM – More available power!

* Includes Balancer Gear (can be removed)

* Replaces OEM # 24100045A

Proudly Made in the USA by S&S Cycle !

Tech Tips:-

The balancer gear CAN be removed!

Suggest Additional Purchase:

Main Bearing x 2 SS310-0593

*“On Line Shopping Only

The post S&S 4-1/2in. Stroke Flywheel Assembly. Fits 114ci & 117ci Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S 4-1/2in. Stroke Flywheel Assembly. Fits 114ci & 117ci Milwaukee-Eight 2017up. https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-4-1-2in-stroke-flywheel-assembly-fits-114ci-117ci-milwaukee-eight-2017up-2/ Tue, 23 Sep 2025 00:02:20 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-4-1-2in-stroke-flywheel-assembly-fits-114ci-117ci-milwaukee-eight-2017up-2/ The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.* […]

The post S&S 4-1/2in. Stroke Flywheel Assembly. Fits 114ci & 117ci Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.

* 4-1/2in. Stroke (Stock in 114ci & 117ci engines)

* FULL Wristpin for aftermarket pistons (NOT compatible with OEM pistons )

* Heat Treated 4140 Material is harder & more than twice as strong as stock

* Stronger assembly eliminates need to weld crankpin

* S&S High Strength Connecting Rods are designed with Finite Element Analysis to eliminate weak spots and handle more power!

* Perfect for Gear Drive Cams

* Consistent balance & precision machining

* Capable of higher RPM – More available power!

* Includes Balancer Gear (can be removed)

* Upgrade on OEM # 24100045A

Proudly Made in the USA by S&S Cycle !

Tech Tips:-

The balancer gear CAN be removed!

Suggest Additional Purchase:

Main Bearing x 2 SS310-0593

*“On Line Shopping Only

The post S&S 4-1/2in. Stroke Flywheel Assembly. Fits 114ci & 117ci Milwaukee-Eight 2017up. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S 131/136ci, 4-5/8in. Stroker Flywheel Assembly. Fits 107/114/117ci Milwaukee-Eight 2017up when using S&S 4.250 Big Bore Cylinders. https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-131-136ci-4-5-8in-stroker-flywheel-assembly-fits-107-114-117ci-milwaukee-eight-2017up-when-using-ss-4-250-big-bore-cylinders/ Tue, 23 Sep 2025 00:02:19 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-131-136ci-4-5-8in-stroker-flywheel-assembly-fits-107-114-117ci-milwaukee-eight-2017up-when-using-ss-4-250-big-bore-cylinders/ The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.Fitment […]

The post S&S 131/136ci, 4-5/8in. Stroker Flywheel Assembly. Fits 107/114/117ci Milwaukee-Eight 2017up when using S&S 4.250 Big Bore Cylinders. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our new crankshaft assemblies for the Milwaukee-Eight platform are the best of the best to build your high performance engine around.

Fitment info for 4-5/8in. Stroke with FULL width Wristpin:

1. Takes 107/114/117ci to 131ci when using S&S 131ci cylinder kits SS910-0762/0763/0764

* FULL Wristpin for S&S pistons are only compatible with S&S pistons taking the displacement to 131ci or 136ci!

Features & Benefits:-

* Heat Treated 4140 Material is harder & more than twice as strong as stock

* Stronger assembly eliminates need to weld crankpin

* S&S High Strength Connecting Rods are designed with Finite Element Analysis to eliminate weak spots and handle more power!

* Perfect for Gear Drive Cams

* Consistent balance & precision machining

* Capableof higher RPM – More available power!

* Includes Balancer Gear (can be removed)

* Upgrade on OEM # 24100152

Proudly Made in the USA by S&S Cycle !

Tech Tips:-

* The balancer gear CAN be removed!

* The FULL width wrist pin is ONLY compatible with S&S pistons!

Suggest Additional Purchase:

Main Bearing x 2 SS310-0593

*“On Line Shopping Only

The post S&S 131/136ci, 4-5/8in. Stroker Flywheel Assembly. Fits 107/114/117ci Milwaukee-Eight 2017up when using S&S 4.250 Big Bore Cylinders. appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S Crankcase Assembly with 4-1/2in. Bore – Black. Fits Touring 2017up https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-crankcase-assembly-with-4-1-2in-bore-black-fits-touring-2017up/ Mon, 22 Sep 2025 23:43:28 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-crankcase-assembly-with-4-1-2in-bore-black-fits-touring-2017up/ These cases are designed to accept cylinders up to 4 1-2in., which is massive, & they have a case with a spigot bore of 4.695in.The demand for performance-based bagger parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s […]

The post S&S Crankcase Assembly with 4-1/2in. Bore – Black. Fits Touring 2017up appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> These cases are designed to accept cylinders up to 4 1-2in., which is massive, & they have a case with a spigot bore of 4.695in.

The demand for performance-based bagger parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting in a stock touring frame.

Features & Benefits:-

* Wrinkle Black.

* Stock deck height

* Machined, close-fitting oil scraper (stock is as cast)

* Large volume sump

* Upgrade on OEM # 24400120

Tech Tips:-

* S&S crankcase assemblies are supplied with main bearings, balancer

bearings, inner cam bearings, cylinder studs, piston oilers, o-rings and hardware.

Proudly Made in the USA by S&S Cycle !

*“On Line Shopping Only

The post S&S Crankcase Assembly with 4-1/2in. Bore – Black. Fits Touring 2017up appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S Crankcase Assembly – Black. Fits Touring 2017up https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-crankcase-assembly-black-fits-touring-2017up/ Mon, 22 Sep 2025 23:43:28 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-crankcase-assembly-black-fits-touring-2017up/ The demand for performance-based bagger parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting […]

The post S&S Crankcase Assembly – Black. Fits Touring 2017up appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> The demand for performance-based bagger parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting in a stock touring frame.

Features & Benefits:-

* Wrinkle Black.

* Stock deck height

* Machined, close-fitting oil scraper (stock is as cast)

* Large volume sump

* Redesigned to accept larger bores

* Upgrade on OEM # 24400120

Tech Tips:-

* S&S crankcase assemblies are supplied with main bearings, balancer

bearings, inner cam bearings, cylinder studs, piston oilers, o-rings and

hardware.

Proudly Made in the USA by S&S Cycle !

*“On Line Shopping Only

The post S&S Crankcase Assembly – Black. Fits Touring 2017up appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S Crankcase Assembly with 4-1/2in. Bore – Black. Fits Softail 2018up https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-crankcase-assembly-with-4-1-2in-bore-black-fits-softail-2018up/ Mon, 22 Sep 2025 23:43:28 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-crankcase-assembly-with-4-1-2in-bore-black-fits-softail-2018up/ These cases are designed to accept cylinders up to 4 1-2in., which is massive, & they have a case with a spigot bore of 4.695in.The demand for performance-based Softail parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s […]

The post S&S Crankcase Assembly with 4-1/2in. Bore – Black. Fits Softail 2018up appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> These cases are designed to accept cylinders up to 4 1-2in., which is massive, & they have a case with a spigot bore of 4.695in.

The demand for performance-based Softail parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting in a stock Softail frame.

Features & Benefits:-

* Wrinkle Black.

* Stock deck height

* Machined, close-fitting oil scraper (stock is as cast)

* Large volume sump

* Upgrade on OEM # 24400188

Tech Tips:-

* S&S crankcase assemblies are supplied with main bearings, balancer

bearings, inner cam bearings, cylinder studs, piston oilers, o-rings and

hardware.

Proudly Made in the USA by S&S Cycle !

*“On Line Shopping Only

The post S&S Crankcase Assembly with 4-1/2in. Bore – Black. Fits Softail 2018up appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> S&S Crankcase Assembly – Black. Fits Softail 2018up https://birdsbitz.com.au/online-shop/engine/crankcase-bottom-end/crankcase-bottom-end-m8/ss-crankcase-assembly-black-fits-softail-2018up/ Mon, 22 Sep 2025 23:43:28 +0000 https://birdsbitz.com.au/online-shop/uncategorised/ss-crankcase-assembly-black-fits-softail-2018up/ The demand for performance-based Softail parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting […]

The post S&S Crankcase Assembly – Black. Fits Softail 2018up appeared first on Birds Bitz Motorcycle Parts & Accessories.

]]> The demand for performance-based Softail parts is growing, and these M8 engines are creating more power daily. All that power requires a quality base that the stock cases can’t provide. That’s where the new S&S M8 Crankcases come in! Designed to allow for larger bores, scrape more oil, and offer more reliability, all while fitting in a stock Softail frame.

Features & Benefits:-

* Wrinkle Black.

* Stock deck height

* Machined, close-fitting oil scraper (stock is as cast)

* Large volume sump

* Redesigned to accept larger bores

* Upgrade on OEM # 24400188

Tech Tips:-

* S&S crankcase assemblies are supplied with main bearings, balancer

bearings, inner cam bearings, cylinder studs, piston oilers, o-rings and

hardware.

Proudly Made in the USA by S&S Cycle !

*“On Line Shopping Only

The post S&S Crankcase Assembly – Black. Fits Softail 2018up appeared first on Birds Bitz Motorcycle Parts & Accessories.

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