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Extralite BlackLock Rear Thru Axle

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Product Description

With the rising popularity of thru axle designs being used by nearly every major fork and frame manufacturer, companies like Extralite have immediately filled in the niche for quality performance tuned parts that many discerning cyclists desire. With this in mind, Extralite has produced the Black Lock, a surprisingly lightweight thru axle skewer. Utilizing a unique externally tapered surface and precise dimensioning, Extralite is capable of shaving as many grams as possible while still maintaining a sturdy design that’s tough enough to withstand the abuse of a typical mountain bike ride. To ensure proper installation that’s as smooth as possible, each Black Lock comes with a self lubricating brass washer that is designed to reduce friction between the skewer and frame/fork.


Each Black Lock skewer is simply installed like your typical OEM skewer, using a 6 mm allen wrench at a torque rating of 10 Nm. It is highly recommended that threads are greased prior to installation to ensure a proper torque rating.


Product Specifications

ModelInterfaceLengthThread PitchThread LengthWeight
BlackLock 12.1 - E-thruFlat172mmM12x1.518.3mm29g
BlackLock 12.1B - E-thru BoostFlat178mmM12x1.518.3mm31g
BlackLock 12.2 - Specialized X12Tapered161mmM12x1.017.2mm29g
BlackLock 12.2B - Specialized X12 BoostTapered166mmM12x1.017.2mm30g
BlackLock 12.3 - MaxleFlat176mmM12x1.7519.2mm30g
BlackLock 12.3B - Maxle BoostFlat182mmM12x1.7520.0mm31g
BlackLock 12.4 - ScottFlat168mmM12x1.017.2mm29g
BlackLock 12.4B - Scott BoostFlat172mmM12x1.017.2mm29g
BlackLock 12.4 RA - Scott RoadFlat158mmM12x1.513.0mm27g
BlackLock 12.4 RB - Giant RoadFlat163mmM12x1.513.0mm28g
Material7075 T6 aluminum
Hub CompatibilityTA 12x142
TA 12x148 Boost
Tool Fitting6mm Hex
Recommended Torque8-10Nm

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