Extralite UltraTop 42

Extralite UltraTop 42 are a member of UltraTopBottom headsets big family, developed by Extralite to fit almost every different headset standard on the market.

All these different standards makes confusion and isn't so easy to know which standard is correct for yur bike, so the best way to go is to measure frame headtube bore with the help of a precision caliper :

With the correct measure and the help of the follow chart, you should be able to choose the correct headset for your bike. You can also find an high-resolution version of this chart inside product pictures.

Extralite UltraTop 42 is the upper part of the headset that will fit frames with integrated or semi-integrated, standard or tapered  (1.1/8"-1.1/2") headset. It's a Press-Fit internal cup type. Upper headtube bore must have 42 mm inner diameter.

Headset Equipment :

• A Press-Fit cup Al7075T6 CNC machined and black anodized with an high quality radial steel micro bearing with double seals
  
• An upper cover Al7075T6 CNC machined black anodized with laser etches with a preload o-ring
• A mounting ring Al7075T6 CNC machined natural aluminum that allow to press-fit upper cup without damaging micro bearing. A thin o-ring is installed on mountain ring...this o-ring should be installed between press-fit cup and upper cover as seal.
  
• An ultralight HyperCap Al7075T6 CNC machined black anodized with laser etched pin-up and logo, only 2.9 grams included its ultralight CNC special mounting bolt
• An ultralight Expander UltraStar 4 Al7075T6 CNC machined, only 5.9 grams 
  

The weight in only 13.8 gr. (22.6 gr. HyperCap and UltraStar 3 included) so a sort of record! This incredible weight is obtained also with the help of the micro bearing that it isn't very strong and cannot handle loads/shocks from upper side, so we raccomand to use UltraTop 42 only for Road and XC use. For heavy duty use you can choose "UltraTop 41-42 HD" that you can find inside our webshop.

Stainless steel avoid corrosion, and the high quality bearing will assure a precise and smooth action better than cheaper stock headsets.

Extralite Headsets has a minor stack height than standard ones especially for the upper part of the headset. This is an advantage because  :

• You can get a lower handlebar riding height with the same steering/control parts, and this is important especially with 29" bicycles.
  
• You can use a fork that has a short cutted headtube.
  
• You can use a fork with a longer travel without modify handlebar riding height (of course steering angle will change a little)

We remember you that's also possible to use standard 1.1/8" forks on frames with tapered headset, with the help of the special  Extralite Extrabolt 16 adapter :

With this adapter headset bearing will work directly on and headset tapered lower cone will not be installed.

Extralite UltraTop 42 is an high quality product Made in Italy