To many, this is commonly called a crown race. Chris King choose to call it a baseplate as their's is technically not a race. It is the foundation of the venerable Chris King Sealed Bearing headset and is designed as a low cost, sacrificial piece, easily replaced when worn or damaged upon removal. Occasionally, it™s nice to start with a fresh one - here™s where you™ll find them.
Chris King offer baseplates in stainless steel and titanium in 1" and 1 1/8" sizes.
Baseplates with undersize bores of up to minus .2mm (-.008") are also available to accommodate non-conforming fork steerer tube mounting dimensions.
For fork crown and downtube interference issues such as those you may find on 29ers and extra-small size mountain bikes we offer a +5mm baseplate in a stainless steel 1-1/8" size.
|1-1/8" Stainless Steel:||PHS432|
|1.5">1 1/8" Devolution Stainless Steel:||PHS626|
|1-1/8" for i4 InSet 49mm Universal Cup:||PHS725|
|1.5" Stainless Steel:||PHS625|