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 Part number: # 309054
 Released: Jul. 24, 2002
Stock status: 

Replaced by Ball-Bearing 10x15x4 Rubber Sealed - Oil (2) 

High-Speed Ball-Bearing 10x15x4 Blue Covered (2) click to enlarge
(click to enlarge)
New high-speed ball-bearings manufactured specially for XRAY. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These highest quality ball-bearings are fitted with special polyamid blue covers, and are degreased and lightly oiled with AeroShell Fluid 12 oil for maximum smoothness, long life, highest tolerance and maximum performance.

These ball-bearings have more (and larger) balls inside the cage than the regular ball-bearings, making them much more resilient under loads. The blue polyamide covers are easy to remove for quick and comfortable servicing.

These ultra-high precision ball bearings are designed to withstand all extremes at the track under racing conditions or even just fun racing. A "must have" item!

These new high-speed bearings are substitutes for 309052 HQ Ball-Bearing 10x15x4 Blue Covered (2), as these are already degreased and oiled for higher speed.