4cadb1cb036448d0880ae729224e1cd3Silly Bike Boy Bearings 

We are experts in bicycle headset bearings. With different headset and bicycle manufactures using their own codes and names for bearings, it can be a minefield trying to work out the correct bearings. We sell individual bearings and kits for bikes and headsets. Our bearings are sourced from the best suppliers, and all our bearings are tested. We are cyclists ourselves!

Headset bearing kit for a 2022 Vitus Substance VR-2. May fit other vitus models. For those specc'd with Acrox IS42 1 1:8” IS52 1.5” IS 42 52 headset

1 x  Upper - MH-P08F / MH-P08H8  30.5x41.8x8 45/45
1 x Lower - MH-P16                                 40x52x7 45/45



High quality bearings, precision milled cups, packed with high grade grease and top bearing features black oxide anti rust coating. 

Why Buy From Us? 

  • Performance: We have spent a long time working with bearing manufactures to find the best quality bearings for our kits. We test all bearings on our own fleet of hire bicycles 
  • Price: Our bearing kits cost less than branded bearings from headset manufacturers
  • Precision Milled: Precision milled steel cups, all our suppliers have Quality ISO standard certification
  • High Grade Grease: Only Mobil grease is used in our bearings, and packed full of the stuff, to makes sure they are up to British weather
  • Rust Protection: Where possible, our bearings have black oxide inner rings for further rust protection
  • Sustainability: We conduct our business in an ethical and sustainable manner. We reduce plastic packaging and instead use recyclable packaging. We even use a cargo bike to get to the post office!

Contact us

We can be contacted at any time through eBay messages if you have any questions on your bicycle or headset, we would be pleased to hear from you. We will respond to you within 24 hours and do our best to help you out! We encourage our customers to contact us with any questions or concerns!

PaymentVia Ebay - Paypal and card payments 
ShippingOur bearings are shipped as standard by Royal Mail 2nd Class. Larger orders can be Royal Mail or Evri
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