Availability
Engine Rotating Assemblies & Rebuild Kits
Racing Spring Kit, HT Steel, 0.630" Lift, Harley-Davidson®, Milwaukee-Eight, 2017-'24
Part Number: KPM-20-23850
Not Yet Reviewed
Estimated Ship Date: Mar 23, 2026 if ordered today
Estimated Ship Date: Mar 23, 2026 if ordered today
Racing Spring Kit, Titanium, 0.630" Lift, Harley-Davidson®, Milwaukee-Eight, 2017-'24
Part Number: KPM-20-23800
Not Yet Reviewed
Estimated Ship Date: Mar 23, 2026 if ordered today
Estimated Ship Date: Mar 23, 2026 if ordered today
PERFORMANCE, 131" KIT - BLACK FINS M8
Part Number: SSY-910-0763
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
S&S Cycle 2017+ M8 Models 4.250in Bore Unhoned Front Cylinder - Black Granite w/ Highlight
Part Number: SSY-910-0740
Not Yet Reviewed
Estimated Ship Date: Apr 14, 2026 if ordered today
Estimated Ship Date: Apr 14, 2026 if ordered today
ENGINE PERFORMANCE, M8 MODELS W/114", 128" BIG BORE KIT M8 BLK
Part Number: SSY-910-0684
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
128" BIG BORE KIT M8 BLK
Part Number: SSY-910-0733
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
ENGINE PERFORMANCE, 17-18 M8 MODELS, BIG BORE CYLINDER SET BLK
Part Number: SSY-910-0683
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017+ M8 Models 4.250in Bore 4.840in Big Bore Cylinder Set - Black Granite w/ Highlight
Part Number: SSY-910-0739A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017 M8 Models 4.250in Bore Rear Cylinder - Wrinkle Black w/ Highlight
Part Number: SSY-910-0676
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
PERFORMANCE, 131" KIT - HIGHLIGHTED FINS M8
Part Number: SSY-910-0762
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017+ M8 Models 4.250in Bore Front Cylinder - Black Granite w/ Highlight
Part Number: SSY-910-0734
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017+ M8 Models 4.250in Bore Rear Cylinder - Black Granite w/ Highlight
Part Number: SSY-910-0737
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017+ M8 Models 4.250in Bore x 4.5in Stroke 114 To 128 Big Bore Kit
Part Number: SSY-910-0684A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017 M8 Models 4.250in Bore Rear Cylinder - Wrinkle Black w/o Highlight
Part Number: SSY-910-0674
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017+ M8 Models 4.250in Bore Front Cylinder - Wrinkle Black w/ Highlight
Part Number: SSY-910-0675
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017 M8 Models 4.250 Bore w/ Highlight Big Bore Cylinder Set
Part Number: SSY-910-0682A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017+ M8 Models 4.250in Bore 4-5/8in Stroke Cylinder Kit - Wrinkle Black w/ Highlight
Part Number: SSY-910-0762A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2007+ BT 4.250in Bore 4.840in - Wrinkle Black w/o Highlight
Part Number: SSY-910-0763A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
PERFORMANCE, 131" KIT - BLK GRANITE M8
Part Number: SSY-910-0764
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
2017 M8 Models 4.250 Bore w/o Highlight Big Bore Cylinder Set
Part Number: SSY-910-0683A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
ENGINE PERFORMANCE, 17-18 M8 MODELS, BIG BORE CYLINDER SET BLK
Part Number: SSY-910-0682
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
S&S Cycle 2017+ M8 124in CI Oil Cooled Power Pack w/ Black Pushrod Tubes w/o Highlight
Part Number: SSY-310-1059A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
ENGINE PERFORMANCE, M8 MODELS W/114", 128" BIG BORE KIT M8 BLK
Part Number: SSY-910-0685
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
CRANKSHAFT, M8 FLYWHEEL 4-1/2" TAPERED
Part Number: SSY-320-0598
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
S&S Cycle 2017+ M8 Models 4.250in Bore 550G Cam Power Pack - Black w/ Highlight
Part Number: SSY-310-1051A
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
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