Extralite UltraTop 41-42 HD

Extralite UltraTop 41-42 HD 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 41-42 HD 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 an integrated top type. Upper headtube bore must have from 41 to 42 mm inner diameter.

Headset Equipment :

• An high quality angula contact bidirectional stainless steel bearing with double seals
  
• An upper cover Al7075T6 CNC machined black anodized with laser etches with a preload o-ring
• An outer seal o-ring
  
• 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 22.0 gr. (30.8 gr. HyperCap and UltraStar 3 included) so a sort of record! This incredible weight is obtained altought the use of an heavy duty bearing that ist very strong and can also withstand to double crown fork loads. If you're going to use the headset for normal cross country mountain biking or road racing you can also choose "UltraTop 41" or "UltraTop 42" model  (that you can find inside our webshop), which has got a small micro bearing to save some extra weight.

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 41-42 HD is an high quality product Made in Italy