TREK Trek Knock Block 58-Degree Headset Assembly with Display Chip
5252156KnockBlock head assembly
Get your bike back on track with the head assembly parts you need.
- Trek patented head tube components compatible with Trek Knock Block models
- Head assembly with 58-degree angle fits all 2017-2020 models equipped with Knock Block
- Includes crown wheel, bearings, top cover, frame chip and; fastener
- Frame chip has display tabs for attaching Bosch Kiox Mount, sold separately
- Must be paired with Knock Block stem and Knock Block spacers
- Knock Block head assembly pads not included
| MFR # | 141-0011000011 |
| Crown race inner diameter | 28.6 mm (1-3/8 inches) |
| Crown race inner diameter | 39.8 mm |
| Cup Insertion OD | Integrated |
| Cup Insertion OD | 8.7 mm |
| Bearing type | Enveloped |
| Headset type upper | No threads, fully integrated |
| Headset type lower | Fully integrated |
| Material | Aluminum |
In our e shop you will find cycling equipment from TREK such as cycling jerseys, kneesocks, trunks, cycling computers, bike bottles, rain jackets and thousands of other small items. In bikes we offer a comprehensive range which includes mountain bikes, trekking bikes, bmx bikes and kids bikes.
TREK is headquartered in Waterloo, Wisconsin. The family-owned business was founded by Richard Burke in 1976, starting out in a small steel bicycle factory with just five employees. Within a few short years, the company caught on to bicycle trends and continued to grow. In the early 1990s, it began producing bicycles in a then-new material - Carbone. Today, TREK sets the trends in bicycle development and is also considered a leader in the processing of Carbone. Its proprietary processing technology, called OCLV, has been applied in production with many innovations for more than 17 years. TREK bikes have celebrated success at major world races and have been associated with names such as Lance Armstrong, Alberto Contador, Chris Lieto, Roland Green, Chris Eatough, Andrew Shandro and Travis Brown. TREK is a premium brand you can always rely on.
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