WOLF TOOTH PREMIUM HEADSET CUP KNOCK BLOCK UPPER IS41
Wolf Tooth Premium Headsets for Trek Knock Block are machined in the USA out of aircraft-grade 6061 aluminum with superior sealing for protection against the elements. Available in a variety of colors to match the style of your bike. These upper headsets are for Trek frames with molded-in internal bearing cups.
NOTE: These headsets are to be used only with Trek Knock Block system
rek developed Knock Block as an integrated frame protection system to prevent self-inflicted scuffs, dents, or cracks from spinning handlebars. Knock Block consists of a special stem and stop chip on the frame. The stop chip limits the turning range of the custom keyed headset cover. The top of the headset cover has notches that lock into corresponding notches on the headset spacers which also correspond with notches in the stem for the strongest connection to the steer tube. These parts work together to prevent the crown of the fork and the handlebar controls from hitting the frame.
Compatibility
- Designed to work only with Trek Knock Block system
- The top cap on these headsets have unique raised features that key to Knock Block-compatible stems (made by Bontrager)
- If spacers are needed, you will need to use special Knock Block-compatible spacers with notch features
Lower headsets on bikes with Knock Block DO NOT have any unique features, as they are usually IS headsets that are available separately.
Webshops and Bike shops
Related Products
-
Description
Chris King Inset i4 Silver 1.5"/49mm Frame suit 1-1/8" fork steerer GripLock
This Chris King® threadless headset features a bearing cap design called GripLock™. GripLock™ is a multi-piece bearing cap that utilizes a split ring that improves steerer tube interface.
InSet™ Model 4 with GripLock™ bearing cap is intended for 1 1-8” steerer dual crown forks, fits bikes from a number of manufacturers and is for long travel applications. As long as your bike doesn’t require an integrated headset this Inset™ headset will perform beautifully on your bike.
This Chris King® Inset™ headset is a low-stack threadless headset. Like other Chris King® headsets, it features user-serviceable stainless steel bearings. Chris King’s bearings are legendary because their design gives you years of trouble free performance with only routine maintenance.
It is absolutely essential that proper reaming and facing of your bike’s head tube be performed by a qualified mechanic during installation of this Inset™ headset. Also, please be aware that modifying a frame to make the Inset™ fit is not a proper method of installation. The proper installation of this headset is so important that you are encouraged to choose another headset if you are not able to have this Inset™ headset properly installed. We highly recommend that you carefully check your bike's specifications before ordering this headset and contact your bike manufacturer if necessary. Please note that we are unable to accept for return, exchange, or credit any headset that has been installed or has been attempted to be installed. This insures that all of our customers receive only pristine, brand new components. Thank you for your understanding. Once properly installed, this Chris King® Inset™ headset will give you years of world class performance.
A wealth of other information is available on the Chris King® website.
American made in USA (U.S.A.)
Specifications:
Warranty: 10 years
Steer tube OD: 1-1/8 inch
Upper head tube ID (tolerances): 49.61mm (+0, -.04)
Lower head tube ID (tolerances): 49.61mm (+0, -.04)
Upper cup minimum ream depth: 16mm
Lower cup minimum ream depth: 16mm
Fork crown seat OD: n/a
Maximum press fit: 0.075mm
Upper stack height (upper cup + bearing cap): 8.0mm
Lower stack height (lower cup + baseplate): 4.0mm
Stem cap screw torque: 15 in. lbs
Weight:120 grams -
Description
Our 34mm/44mm NoThreadSet™ provides Chris King precision function in a design that brings Chris King’s legendary headset precision to a new crop of tapered headtubes using tapered forks and external upper and lower cups
- King Lifetime Warranty
- Legendary made-in-house bearings
- Patented GripLock® retention design for exclusively reliable headset adjustment (1-1/8” only)
- Built to accomodate 1-1/8” to 1.5” tapered steerer tubes -
Description
IS60 Lower Pivot headset assembly with oversize 45.8mm internal.
-
Description
Wolf Tooth Premium Internal Headsets for ENVE IN-Route System are designed and machined in Minnesota headquarters with aircraft-grade 6061 aluminum. They are designed to have an ultra-low stack height, to be lightweight, and durable. Wolf Tooth headsets have three levels of industry-leading custom sealing to protect bearings from the elements and prolong the life of the headset. Available in a variety of colors. Premium Headsets with Enduro stainless steel bearings carry a lifetime warranty.
COMPATIBILITY
- Designed for the ENVE IN-Route System with a 44mm straight headtube and a 1-1/8” to 1.5” tapered steerer tube (FITS ONLY ENVE In-Route System)
- Use top cap and split spacers provided with ENVE stems and one-piece cockpits.
- Use the compression plug that comes with your fork.
- Sold as a complete upper and lower EC44 Headset.
- Enduro stainless steel bearings included.
- Two 0.5mm spacers are included to dial in headset compression if necessary.
TECH SPECS
Material: 6061 Aluminum
Dimensions:
- Total Stack Upper Headset - 15.8mm
- Total Stack Lower Headset - 12.25mm
- For Headtube Internal Diameter - 44mm
- Cup External Diameter - 56.5mm
WEIGHTS:
Upper Headset - 69g
Lower Headset - 47g
Complete Headset - 116g
FEATURES
- Premium Enduro stainless steel bearings.
- Available in seven Wolf Tooth anodized colors to match other Wolf Tooth components.
- Designed with the Wolf Tooth triple-sealed system present on all other Wolf Tooth headsets:
- Internal o-ring top cap seal prevents water intrusion around the steerer tube.
- Custom-molded upper cup lip seal provides additional protection for the upper bearing.
- Custom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditions.
Made in the USA
