White Industries IS42/IS52 - 1-1/2 crown race

Description

Note: As the White Industries catalogue is diverse, we don't stock every variant or colour. However, we place regular airfreight orders. If an item is in stock at White Industries, we can usually have it here within a week. Even if it's not in stock, they can often assemble it for us, and we can have it within three weeks at most. Feel free to get in touch if you're after something specific!

The IS42│IS52 headset is designed to fit frames with integrated 42mm/52mm head tubes and works with tapered and straight fork steerers. The “IS” stands for “Integrated” as the bearing sits directly inside the frame’s head tube without a cup. The “42/52” stands for the top/bottom inside diameter of the frame’s head tube.

Features

  • U.S. sourced 6061-T6 aluminum
  • Machine engraved White Industries logos 
  • Easily replaceable 440C Stainless Steel Enduro bearings which feature a limited lifetime warranty
  • “Split” crown race for tool-free installation and removal
  • Really sweet matching headset spacers available separately
  • Can accommodate 3 types of fork steerers:
    • “Straight” 1-1/8″ with a 30mm crown race
    • “Tapered 1-¼” with a 33mm crown race seat
    • “Tapered 1-1/2” with a 40mm crown race seat

Specs 

  • SHIS specification
    • Upper: IS42/28.6
    • Lower: IS52/40
  • Stack height
    • Upper: 8mm
    • Lower: 1mm
  • 45 degree outer contact angle
  • SHIS definitions on the Park Tools website: here
  • Frame/Fork specs:

Frame upper head tube inside diameter

41.95mm to 42.05mm with a 45 degree contact angle

Frame lower head tube inside diameter

52.05mm to 52.15mm with a 45 degree contact angle

Fork steerer diameter top section 

28.45mm to 28.6mm

Crown race seat diameter for

“straight 1-⅛”

30.015mm to 30.075mm

Crown race seat diameter for

“tapered 1-¼”

33.03mm to 30.09mm

Crown race seat diameter for

“tapered 1-½”

39.79mm to 39.85mm

Bearings

Headset Model

 Upper Bearing (inner/outer angle) Lower Bearing

(inner/outer angle)

Lower Fork Race Compatibility

IS42│IS52

 ACB36451125SS 36/45 ACB6808CCSS 36/45

1-⅛” (30mm)

 1-¼” (33mm)

 1-½” (40mm)

Code Product Name Stock Your Price Quantity
HSWI5000
White Industries Headset IS42/IS52 - 1-1/2 crown race Black
Stock Level:
Please Enquire
Contact your local dealer for pricing and availability
HSWI5001
White Industries Headset IS42/IS52- 1-1/2 crown race Polished Silver
Stock Level:
Please Enquire
Contact your local dealer for pricing and availability