946430 Replacement 45" Flathead piston kit. +.050"
incl. VAT
Chapter members save 15% · Sign in for member pricing
Estimated delivery: 3–15 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- MCS
- Part Number
- 946430
- OEM Reference
- 946430
- Pack Quantity
- Sold as kit
- Category
- Pistons And Rings Kits
- VAT Rate
- 20%
About This Product
MCS replacement piston kit for 1929 to 1973 45-inch Flathead models. This is the .050-inch oversize. The pistons are cast aluminium in OEM style for a stock 750cc Side Valve rebuild. The kit includes pistons, wrist pins, retainers, and rings. It carries OEM number 946430. Measure everything carefully before installation. Follow proper break-in procedure so the pistons seat.
Manufacturer part number: 946430.
Fitment
29-73 45" (750cc) Side Valves
Related Products
View all →
Wiseco
1340cc Shovel low compression piston kit. +.040"
Wiseco
1200cc Pan/Shovel piston kit. +.040"
Wiseco
1340cc Shovel piston kit. STD
S&S
Evo 3-5/8 big bore piston set (OEM heads). +.010"
S&S
113" 4" bore piston kit. +.010"
KB Performance Piston
Performance, 88" to 95" Twin Cam piston kit. +.030"
KB Performance Piston
Performance, 1340cc Evo B.T. pop-up piston kit. STD
S&S
M8 114" to 128" big bore piston kit. +.010"
More from MCS
View all →
Wheel hub spacer front 2.424"
Wheel hub spacer, inner. Front. 1.316"
Tapered bearing & race kit
Cam driven gear. 34T
Pushrod cover seal kit, blue silicone
Rivet set for early saddlebags & tour-pak
OEM style main wiring harness. XLCH
OEM style main wiring harness. XLCH
Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.