Shimano SM-HB20 Lock Ring - 15/20mm Thru Axle Only
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Product Feature
- Lock ring for center lock hubs with 15mm or 20mm thru-axle
Product Description
(IS): 6-bolt/44mmBCD International Standard, (CL) 35mm CenterLock spline-mount (note: Saint-M800 47mm Oversized-CenterLock spline-mount rotors and lockrings have been discontinued) All rotors include hardware: either 6-bolt or CenterLock lockring+washer (lockrings for thru-axle applications available separately) RT97 CenterLock rotors are for XTR applications (replaces older RT96 version) RT79 CenterLock rotors are for Saint/XT-level applications (replaces older RT78/77 versions) RT76/75 6-bolt rotors can be used with all Shimano disc brake systems: XTR,Saint,XT,SLX,LX,Deore,etc. (note: the newer RT76 rotor uses a lightweight 2-piece design with a 5-arm aluminum carrier and a stainless steel rotor) CenterLock lockring/washer applications: (QR) for quick-release hubs, (TA) for thru-axle, and (F or R) for front or rear when applicableShimano SM-HB20 Lock Ring - 15/20mm Thru Axle Only Review
I just had a really nice custom wheelset made for my 29er mountain bike, and didn't know until I took delivery of them that the front hub (DT Swiss) requires a lock nut with external teeth, rather than the internal teeth the Mavics I used to run required. Finding this part locally proved futile, and only one or two shops on Amazon offered it, and at 24 bucks it's not exactly cheap, but it IS neccessary in this case.As usual, it's typical Shimano quality - awesome. It's just a locknut, but a good locknut.
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