Designed with precision and durability in mind, the 61903/29.5 SRS - ABEC 5 by Enduro Bearings is ideal for cyclists who demand top-tier performance from their bike. Known for its endurance, reliability and smoother ride, this product represents a noticeable performance upgrade from the ABEC 3 range.

Fitted with high precision HRC-64 hardened Grade 5 Chromium Steel Balls and 52100 High-Carbon Chromium-Alloy mirror polished races, this bearing makes use of tolerances that are twice as tight as those found in ABEC 3. This precise configuration ensures a noise-free operation, making your ride more peaceful and enjoyable.

The inclusion of Graphite/Nylon ball retainers further enhances the product's smoothness, offering almost frictionless movement. Besides reducing wear and tear, this feature provides constant lubrication, greatly extending the life of the bearing and offering long-term value.

The ABEC 5's dimensions of 17mm x 29.5mm x 7mm make it perfectly suited for hubs and bottom brackets. The compatibility with these critical bike parts also means that it drastically reduces mechanical resistance, improving the overall efficiency of your bike. And with a weight of just 15.03g, this little component won't weigh you down!

For an upgrade in comfort, performance, and durability of your bike, look no further than the 61903/29.5 SRS - ABEC 5 by Enduro Bearings. Start riding smoother today!