KAV motorsport +5% Alternator Pulley - R53 Cooper S

  • £51.49
  • (Delivery from £28.00)
  • RRP £56.57
Item in Stock | Usually dispatched within 24 hours
  • Increase Alternator Life
  • Increase in BHP - Less stress on Belt due to increase Efficiency
  • Allows you to Run a Higher Rev Limit for More Performance


The increased size +5% BMW mini alternator pulley form kav motorsport for the R53 cooper S helps to extend the life of your alternator after fitting such modifications as the Kav Motorsport reduced size super charger Pulley and the Kav motorsport enlarged crank pulley.

The pulley prevents the alternator from being span too quickly reducing the life span of the alternator.  It also helps to reduced the amount of stress applied to the belt causing it to wear and affect the BHP figures. The +5% pulley is manufactured from mild steel and has a galvanized surface finish to protect it form the elements.

If you want to use your standard size OEM belt but run a reduced size super charger pulley From 11% - 15% then the +5% alternator pulley will allow you do do this.

If you require a custom size for example +6% or +7% alternator pulley please just drop us an e mail.

Just like the Reduced size super charger pulleys the Kav motorsport alternator pulley also comes with a lifetime warranty and is manufactured to the following standards. (ISO 9001:2008 and ISO 14001:2004).


 At PRS Racing we don't want to charge any more than is necessary for the postage hence we charge by the weight of each product, helping to ensure cost effective shipping prices.
The following prices are based around quotes and can be subject to change. If this is the case PRS Racing reserve the right to contact you with any shipping amendments prior to shipping of your products to ensure 100% customer satisfaction. All prices are INCLUSIVE of VAT.

UK Delivery Services:

Free Delivery is 1st Class Royal mail Signed for if Under 3KG

Special Delivery is Pre 1Pm Royal Mail - if under 3KG


Next day Delivery Is Royal mail business if under - 3KG


Over 5KG DHL/UK mail next day

European Delivery

Delivery is based on weight in both the UK and Europe please allow 3 - 7 working days for delivery

0 - 0.49kg       £4.99
0.5 - 0.99kg    £5.99
1kg - 2.99kg   £6.99
3kg +              £20  (Weight Dependent)

Rest of World Delivery

International orders are worked on Volumetric weight. Please allow 4 - 10 working days for delivery

0 - 0.49kg      £9.99
0.5 - 0.99 kg  £12.99
1kg - 2.99kg  £14.99
3kg +             £25.00 (Weight Dependent)

All Parcels are shipped with a tracking number to ensure you know when to expect your order. If you have supplied us with a contact number or e mail, you can txt to re arrange the delivery with the Currier at a suitable time and date. Items that are in stock are shipped same day if the order is placed before 2pm.

PRS are committed to keeping a large stock of goods, however we cannot always guarantee that all items will be in stock at time of purchase. If your item is not in stock we will contact you informing you when to expect your item.

PRS cannot be held liable for any reasonable or unavoidable loss or damage suffered as a result of a delay in delivery.

Please Note: As a result of Brexit and the continued changes some orders my be subjected to import Tax and handling Fees. Please check first if you are unsure before placing an order.