stery dartmoor storm intro is42 is60 ridehubThe Dartmoor Storm Intro IS42 IS60 are budget friendly integrated headsets that maintain the high quality standards of the top of the line Storm model. Featuring sealed 45 45 precision bearings with a black coating and standard density grease, this model offers solid performance at an affordable price . The IS42 IS60 SHIS standard ensures compatibility with modern frames with large head tube diameters. Compatible with the Dartmoor Thunderbird