BBB Steerer Tube Extender / Quill Stem Converter 28.6-25.4mm [BHP-21]

• Adapter that enables you to make your steering tube longer whilst retaining the same stem system.
• BHP 20 is for 1″ forks. BHP 21 is for 1 1/8″ forks.
• Threaded and threadless headset compatible.
• Sandblasted black BBB RoundHead top cap included.
• Size: 28.6mm upper diameter (new stem mounting part) – 25.4mm lower diameter (bolts inside existing steerer)

Delivery Cost

Items are sent:

Royal Mail 48 Hour Tracked  

Currently prices are:

Large Letter – £2.80

Parcel – £3.39

Or for an additional cost:

Royal Mail 24 Hour Tracked

Currently prices are: 

Large Latter – £3.40

Parcel – £4.09

Larger items will be sent with another courier such as DPD, Evri or ParcelForce.

Prices start at £3.39 

There will also be an option at an additional cost for larger items for Next Day Delivery

Prices start at £4.49

Postage is calculated for each item by weight and size.

Postage will be indicated at checkout.

Orders over £30 will be sent with free P&P and this will be seen at checkout.

Remote UK and Islands

Please accept our apologies for this but all the couriers apply surcharges for remote UK and the Islands. This includes: IM – Isle Of Man, BT – Belfast & Nortern Ireland, IV – Inverness, PH – Inverness, PA – Renfrewshire, KY – Kirkcaldy, KW – Orkney Isles, HS – Isle Of Lewis, ZE – Shetland, PO – Isle of Wight.

For these postcodes we use Royal Mail service unless otherwise agreed based on required timings. Deliveries over 2Kg to the above postcodes may incur further postal charges but we will contact you before processing your order.

Your order shipment

Packages are generally dispatched within 2 working days after receipt of payment. 

Combined Postage

If you are buying more than one item please place them in the same basket. Postage costs can then be combined. Or if your basket contents come to over £30 then free P&P will apply.

We do not ship overseas.