Chris king dropset 4 is42 is42 headsetchris king started making headsets in 1976 and have been refining them ever since. This model features a robust aluminium construction, which makes it more than ready to handle all the intensity that comes with long days on your bike. Whether you're clocking up the miles with your local road club or shredding the mtb trails, this versatile headset is engineered for maximum strength and performance. Built for precision, it sets the standard for quality by offering an integrated headset design that's built on the same pedigree of the brand's headsets from the past 40 years. Coming complete with a patented griplock retention design, this model offers exclusively reliable headset adjustment.features material aluminium, stainless steel use road, mtb and gravel size 1 1 8 type integrated upper and lower bearing is42 is42 baseplate compatibility chris king baseplate and 45 degree integrated crown races 42mm 45x45 upper and lower bearing patented griplock retention design for exclusively reliable headset adjustment legendary made in house bearings engineered, manufactured and assembled in portland, oregon usatechnologies griplock the most significant challenge to overcome is that integrated bearings are not pressed into a cup and sit loosely in the frame. When bearings are not pressed securely into a cup they shift and move, rapidly losing preload. As preload drops, the bearings are more susceptible to creaking, damage, and failure. Chris king's patented griplock bearing cap is tried and tested and is a patented design that preloads the headset independently of clamping onto the steerer. The griplock design ensures that the chris king dropset 4 retains preload far better than the competition and is impervious to the ill effects of load spikes from large hits and heavy braking. This means smoother steering, no more creaking, and a longer lasting headset.buy chris king components from chain reaction cycles, the world's largest online bike store.