Availability
Powersports Top End Engine Kits
BIG BORE KIT CRF110
Part Number: BRM-411-HCF-1151
Not Yet Reviewed
Estimated Ship Date: Nov 16, 2026 if ordered today
Estimated Ship Date: Nov 16, 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: Dec 11, 2026 if ordered today
Estimated Ship Date: Dec 11, 2026 if ordered today
BORE KIT - 88CC
Part Number: BRM-411-HXR-7001
Not Yet Reviewed
Estimated Ship Date: Nov 17, 2026 if ordered today
Estimated Ship Date: Nov 17, 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: Dec 14, 2026 if ordered today
Estimated Ship Date: Dec 14, 2026 if ordered today
Cyl. Head Serv. Kit (89mm Bore), KTM®, RFS's 450-560cc, 2000-2009
Part Number: KPM-96-96560
Not Yet Reviewed
Estimated Ship Date: Dec 14, 2026 if ordered today
Estimated Ship Date: Dec 14, 2026 if ordered today
Cylinder Assembly
Part Number: RRA-7-05065
Not Yet Reviewed
Estimated Ship Date: Nov 30, 2026 if ordered today
Estimated Ship Date: Nov 30, 2026 if ordered today
Top End Engine Kits CYL WORKS BIG BORE KIT POLARIS CYL WORKS BIG BORE KIT POLARIS 1000 RZR XP '14-15
Part Number: CLW-61003-K01
Not Yet Reviewed
Estimated Ship Date: Oct 29, 2026 if ordered today
Estimated Ship Date: Oct 29, 2026 if ordered today
88CC BIG BORE PISTON KIT
Part Number: BRM-411-HXR-5411
Not Yet Reviewed
Estimated Ship Date: Oct 29, 2026 if ordered today
Estimated Ship Date: Oct 29, 2026 if ordered today
Piston/Spring Kit, 0.440" Lift, Polaris®, VARIOUS 900'S 2013-2023
Part Number: KPM-82-83900
Not Yet Reviewed
Estimated Ship Date: Nov 23, 2026 if ordered today
Estimated Ship Date: Nov 23, 2026 if ordered today
Racing Spring Kit, HT Steel, 0.450" Lift, Polaris®, Various 570's, 2014-2023
Part Number: KPM-82-86010
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, 0.435" Lift, Honda®, CRF 250R/RX, 2018-2021
Part Number: KPM-30-33600
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 570's, 2014-2023
Part Number: KPM-82-86000
Not Yet Reviewed
Estimated Ship Date: Nov 23, 2026 if ordered today
Estimated Ship Date: Nov 23, 2026 if ordered today
2017+ M8 Models 4.250in Bore 550C Cam w/ Black Pushrods Power Pack - Black w/ Highlight
Part Number: SSY-310-1054C
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 132in Power Pack w/ Chrm Pushrod Tubes & Cam Chain Tensioners - Blk w/o Highlight
Part Number: SSY-310-1233C
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 128in CI Oil Cooled Power Pack w/ Chrome Pushrod Tubes w/ Highlight Black Granite
Part Number: SSY-310-1110C
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 129in Power Pack w/ Blk Pushrod Tubes & Cam Chain Tensioners - Blk w/o Highlight
Part Number: SSY-310-1226C
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 Models 128in Power Pack w/ Chrome Pushrod Tubes - Granite Blk w/ Highlight
Part Number: SSY-310-1109C
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 550C Cam Power Pack - Black w/ Highlight
Part Number: SSY-310-1229C
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
ProX Top End Kit Pol. 600CFI '07-08
Part Number: PXR-11-5603-000
Not Yet Reviewed
Estimated Ship Date: Nov 9, 2026 if ordered today
Estimated Ship Date: Nov 9, 2026 if ordered today
TOP END KIT
Part Number: WIS-SK1321
Not Yet Reviewed
Estimated Ship Date: Nov 6, 2026 if ordered today
Estimated Ship Date: Nov 6, 2026 if ordered today
99-06 Twin Cam 88 A Engines 4-1/8in Bore S&S Stud Pattern Crankcase - Wrinkle Black
Part Number: SSY-31-0178A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
99-06 BT Stock Bore Crankcase Assembly
Part Number: SSY-31-0172A
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 128in CI Oil Cooled Power Pack w/ Chrome Pushrod Tubes w/ Highlight - Wrinkle Blk
Part Number: SSY-310-1104C
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 4.250in Bore 550C Cam w/ Chrome Pushrods Power Pack - Wrinkle Black w/ Highlight
Part Number: SSY-310-1101C
Not Yet Reviewed
Estimated Ship Date: Dec 7, 2026 if ordered today
Estimated Ship Date: Dec 7, 2026 if ordered today
2017+ M8 129in Power Pack w/ Chrome Pushrod Tubes & Cam Chain Tensioner - Blk w/ Highlight
Part Number: SSY-310-1223C
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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