Availability
Powersports Top End Engine Kits
Racing Spring Kit, HT Steel, 0.450" Lift, Polaris®, Various 4 cyl., 2020-2023
Part Number: KPM-82-86065
Not Yet Reviewed
Estimated Ship Date: Nov 23, 2026 if ordered today
Estimated Ship Date: Nov 23, 2026 if ordered today
BIG BORE KIT CRF110
Part Number: BRM-411-HCF-1151
Not Yet Reviewed
Estimated Ship Date: Oct 27, 2026 if ordered today
Estimated Ship Date: Oct 27, 2026 if ordered today
Racing Spring Kit, Titanium, 0.450" Lift, Kawasaki®, KX 250's, 2020-2023
Part Number: KPM-40-41600
Not Yet Reviewed
Estimated Ship Date: Nov 23, 2026 if ordered today
Estimated Ship Date: Nov 23, 2026 if ordered today
Racing Spring Kit, Titanium, 0.450" Lift, Polaris®, Various 4 cyl., 2020-2023
Part Number: KPM-82-86050
Not Yet Reviewed
Estimated Ship Date: Nov 23, 2026 if ordered today
Estimated Ship Date: Nov 23, 2026 if ordered today
S&S Cycle 84-99 BT 4 1/8in Bore Cylinder & Pistons Kit For S&S V124 Engine - Natural
Part Number: SSY-910-0229
Not Yet Reviewed
Estimated Ship Date: Dec 4, 2026 if ordered today
Estimated Ship Date: Dec 4, 2026 if ordered today
ProX Top End Kit Pol. 800CFI '11-12
Part Number: PXR-11-5812-000
Not Yet Reviewed
Estimated Ship Date: Nov 4, 2026 if ordered today
Estimated Ship Date: Nov 4, 2026 if ordered today
2017+ M8 4.2520in Bore x 4.5in Stroke 117 to 128 Big Bore Kit
Part Number: SSY-910-0733A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 96in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH96 Engines - Natural
Part Number: SSY-91-7207
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
84-99 BT 96in 3 5/8in Big Bore Cylinder & Intermediate Compression Piston Kit - Natural
Part Number: SSY-91-7054
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 96in 3 5/8in Big Bore Cylinder & Piston Kit - Natural
Part Number: SSY-91-7202
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 66-84 3-7/16in x Up To 4-3/4in Stroke Cylinder Kit - Gloss Black
Part Number: SSY-91-9017
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
07-16 BT 117in Low Compression 4-1/8in Big Bore Kit - Wrinkle Black
Part Number: SSY-910-0318
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 Models 4.320in Bore 4.500in Stroke Cylinder Kit - Wrinkle Black w/o Highlight
Part Number: SSY-910-0846A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 00-21 Sportster Models 1200cc to 1250cc Hooligan Kit - Silver
Part Number: SSY-910-0702
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 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: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 07-17 BT 117in Big Bore Cylinder Kit - Silver
Part Number: SSY-910-0213
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 66-84 BT 3-31/32in Stroke 3-7/16in Bore 8.0 To 1 Compression Cylinder Kit - Gloss Black
Part Number: SSY-91-9013
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Highlighted Cylinders
Part Number: SSY-910-0843A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 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: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 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: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 96in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH96 Engines - Wrinkle Black
Part Number: SSY-91-7707
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 84-99 BT 84-99 BT 4 1/8in Bore Cylinder Kit For S&S V111 Engine - Natural
Part Number: SSY-910-0219
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 Models 4.250in Bore 4.500in Stroke Cylinder Kit - Wrinkle Black w/o Highlight
Part Number: SSY-910-0685A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
07-16 BT 124in Low Compression 4-1/8in Big Bore Kit - Silver
Part Number: SSY-910-0327
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
S&S Cycle 86-21 Sportster Models High Compression 1250cc Conversion Kit - Silver
Part Number: SSY-910-0690
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
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