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Nukeproof Mix & Match Bottom Headset Cup | Chain Reaction Cycles


Nukeproof Mix & Match Bottom Headset Cup

Nukeproof headset’s are now available as separate top and bottom cups allowing you to easily choose the options you require.

The cups will allow you to replace only the bearings with the Nukeproof Steel Bearing. Precision-engineered to the most exacting of tolerances to deliver optimum performance and long life in harsh riding conditions.

The latest generation of headsets have been revised, improved and expanded for optimum fit, sealing and performance as well as compatibility with a wide range of fork and frame standards. Featuring sealed angular contact bearings, split alloy crown races and upper and lower bearing cups CNC-machined from proprietary aluminium, the headset offers the optimum balance of light weight, strength and durability for performance across all riding disciplines.

The headset is available in a range of options to cover multiple fork/headtube configurations, including full range of Standard Steerer (SS – 1-1/8") and Tapered Steerer (TS – 1-1/8" to 1.5") combinations. Internal and external cup options also available including zero stack versions with internal top and bottom cups.

All models feature a super tough black hard anodised finish, with laser-etched graphics.

Don’t know which headset you need? No problem! Simply use our Headset Technical Guide which includes a Headset Finder.

Nukeproof Headset Chart
  Headset Cup Required  
Complete Headset Top Bottom Also Required
34EESS T1 B1  
44IESS T2 B4  
44IETS T2 B5  
44IISS T2 B3  
49IESS T3 B7 Nukeproof Reducing Crown (Post 2015)
49IETS T3 B7  
49IISS T3 B6  
44-56IITS T2 B8  
44-56IISS T2 B8 Nukeproof Reducing Crown (Post 2015)


  • Specific Bottom Headset cup
  • Replaceable angular contact bearings
  • Lazer – etched graphics (including code)
  • Split Alloy Crown Race for easy installation/removal 
  • Hard Anodised Finish
  • Internal and external options
  • Reducer crown race for 1.5" available

Buy Nukeproof Components from Chain Reaction Cycles, the World's Largest Online Bike Store.



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Headsets Buying Guide

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