My message Close
Found it cheaper? We'll match it
All major providers accepted
Save on your next purchase
0% APR, Pay in 3, PayPal
Bike Servicing & Repairs
With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.
Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!
With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.
So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.
Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.
The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.
Hassle free returns
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged. In the event an item is returned to ourselves in an unsuitable condition, we may have to return the item or offer a partial refund. Unless the return is due to a faulty product or an incorrect delivery on our part you will have to cover the cost of the return. If you believe that we should be covering the cost of the return please contact us in advance to discuss the available options.In line with the customer rights act 2015 if you receive an item that is faulty, of un-satisfactory quality, unusable or that differs from how the product is described you are entitled to return the item for a full refund within 30 days of purchase.
Include the returns form and send it to us with the delivery company of your choosing - easy peasy!
If you wish to return bikes or bulky items such as forks or turbo trainers please contact our Returns Department to arrange a special courier collection. Contact us on our email address websales@99bikes.co.uk We can arrange collection for you from your home or work address, using our couriers ( You may be required to cover postages costs )
* Bulky Items Include - Bikes - Wheels/wheelsets - Turbo Trainers - Framesets - Forks - Groupsets - Car racks - Child Seats
Please contact us prior to returning so we can ensure the fastest suitable resolution for you: websales@99bikes.co.uk. We also ask that you contact us before having a 3rd party undertake work on an item purchased from 99 Bikess. Any work carried out without 99 Bikes consent will not be eligible for reimbursement and may void future warranty claims for that item.
Brand:Silca Aeromind Llc
Code:SIAMVVTUBASY007
SpeedBalance is the world's first Aerodynamic Wheel Magnet AND tunable balancing system for high performance cycling. SpeedBalance replaces your spoke magnet with a rim mounted aerodynamic magnet that can save up to 1 watt at 30mph. 4 Tungsten slugs inside the SpeedBalance weigh 2.5 grams each allow for custom wheel balancing up to 10 grams to offset valve stem weight and create perfectly balanced wheels to eliminate high speed vibrations and improve handling.
Upgrading 2 Wheels with SpeedBalance and SpeedShield will save just over 1 Watt at 30mph slightly more savings than upgrading that same wheelset to Ceramic Bearings.
Performance oriented cyclists with carbon wheels can all benefit from SpeedBalance. Balanced wheels improve handling comfort and confidence particularly on high speed descents while the aerodynamic benefits of the SpeedBalance magnet over spoke mounted magnets results in a wattage savings equivalent to a full wheel ceramic bearing upgrade at a tiny fraction of the cost.
SpeedBalance Kit comes with:
2x SpeedBalance Pods (each pod contains 1 magnet and 4 Tungsten slugs)
2x SpeedShield Aero Valve Stem Pod