Janspeed 4-1-1 Mini Performance Exhaust Manifold R50 R52 R53 - Gen 1

  • From £380.00
  • (Delivery from £24.99)
Item in Stock   |   Usually dispatched within 24 hours


  • 4-1-1 Down Pipe Design
  • Enlarged Diameter Pipe Boar
  • Improved Gas Flow
  • Various Cat Options available
  • Increase in BHP and Torque Figures Dramatically
  • Boost Mid Range Power and throttle reponse
  • 37mm manifold Port Width

Janspeed Manifold

The Janspeed high performance exhaust manifold for the bmw min cooper s is easily the best performance manifold on the market. It uses a superior size pipe boar over the stock manifold which is the most restrictive element on the cooper s engine. Due to a much larger pipe boar gas flow if further increased resulting in far greater power gains for BHP and torque. These gains have been seen time and time again on the dyno. One of the main advantages of the janspeed high performance manifold is the size of the exhaust ports. They are much bigger than stock and allow for even modified heads running larger exhaust ports. 


Janspeed Bolt in De- Cat

The Janspeed bolt in de-cat has been designed to be easily removed for occasions such as track days or any off road driving, further increasing gas flow and performance. For on road use the High flow sports cat can be used as an alternative to the de cat allowing you to swap between the two dependent on what your using yo mini for. 

Janspeed Sports Cat

Mini standard OEM cat uses 400CPI unlike the high flow sports cat which uses 200CPI. The sports cat is only suitable for vehicles running around 160BHP. The janspeed sports cat combined with the manifold will help to increase gas flow and further increase a noticeable power gain for any cooper s. 

Please Note

Gaskets are sold separately

 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.