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Part Description
Triumph Street Twin 17 Tapered Headrace Bearing Set (By All Balls USA)
Kit contains 4 parts:
2 Seals
2 Tapered Bearings
Bearings are 55x30x17
WARNING: Seals are unsuitable for
YZF R6 and YZF R1 Bikes
All Balls Tapered Headrace Bearings
On models with tapered original steering head bearings All Balls heavy duty tapered bearings function as a high quality direct replacement.
On models that originally took ball-type steering head bearings, All Balls tapered bearings can be used as an upgrade. Ball-type bearings have tiny points of weight-bearing contact area, which means that ball type bearings have a much shorter lifespan than a tapered bearing, where the weight is spread across the long surface of a cylindrical roller. In addition, tapered bearings are far easier to install and do not have the issue of over or under-tightening of the original uncaged bearing design which could cause handling problems.
All Balls tapered steering head/headrace bearing kits contain the upper and lower bearing and seals where appropriate.
Delivery and Returns
We want you to be happy with your purchase. If you're not, just return the products to our warehouse. Unless faulty, we'd like this to be within 30 days of purchase. Exceptions apply to certain products.
Sealed Bearing 2RS - DDU
All the wheel bearing we supply are 2RS - DDU.
Double sealed and ready lubricated with premium grease for added protection against dirt and water ingress and are made of high strength AISI 52100 chrome steel components for the rolling elements and the inner and outer rings; to ABEC 1 dimensional tolerances and C3 radial clearance tolerance.
The bearings also undergo electronic noise and vibration testing according to ANSI/AFBMA Standard 13-1987.
Care And Maintenance
Although bearings are subjected to large amounts of stress and are continually being used to fulfil various duties, they are precision made and typically last a long time (bearing failure is often due to improper installation and fitting). However high-mileage bikes and dirt bikes, which are exposed to a lot of mud and water, can become vulnerable and require attention sooner than expected.