About us

Shop & garage opened on:


Tuesday till Saturday 9.00 till 12.00 & 13.00 till 17.00 hours.

Thursday 19.00 till 21.00 hours.

Closed on Mondays!


Visiting only with appointment!


Chamber of Commerce:        17122606

VAT registration number:    NL 149002488B01


Bank Account:          

IBAN:                                     NL94 RABO 0118111965

BIC:                                        RABONL2U

Bank name:                          Rabobank De Leijstroom

Street:                                   Monseigneur Bekkersplein 7

ZIP:                                         5076AZ

City:                                        HAAREN

Country:                                 The Netherlands



All prices on the website are including 21% VAT.

Prices are excluding shipping costs.


How to order? 

  •          It is possible to order parts from our shop.
  •          Also possible is ordering your parts by telephone.
  •          Contact form (preffered)

Delivery method

  •          Pickup order in our shop
  •          Shipping, but for larger parts it’s better to come and collect your order

Payment options

  •          Cash upon picking up your order
  •          Pre pay by bank, when the money has come in our bank account we will ship or you can collect. 
  •          Paypal, also possible to pay with paypal. We will charge an additional fee of 5% to cover extra costs.
  •          Reimbursment to postman, only for small packages and shipping within The Netherlands


For all products we sell warranty as given by manufacturers applies. Please always ask for the conditions with regards to your order. For exterior parts like bumpers, and wide body kits we do not give warranty this is due to our experiences in the past with bad fitment on some of the exterior parts. For nearly all bumpers the note applies, that one should take into account possible additional fitment work might be required.

Availability of products:

Due to the large diversity of the products we can offer. And also due to the complexity of customer or car specific requests. It is not possible for us to keep all the parts we can supply in storage. The best thing way of going about is to make an enquiry with us whether the parts you would want to order with us are in storage. We can then give you instead feedback whether these are in stock, and if need be also instantly tell you when your order will be ready for pickup in our shop or when you can expect delivery at your address.


JT-performance previously Jeroentje.nl tuning started in 2001 by the purchase of a Mazda 323F 2.0 V6 GT. From what started as a hobby over the years this has grown into a full blown professional tuning company. In the beginning it started with people being interested in the Mazda 323F build. From posts on forums, and websites the interest kept growing. And soon the first requests from customers came in whether they could have their cars tuned up, and also if there where possibilities to order parts. From this Jeroentje.nl tuning has started as a tuning company. At first work was done in a garage next to a house, later in a little shed in remote location. And finally in the large garage that we are based in now. With a 300m2 garage, with 2 car lifts, and a dyno bench. Also we have a large workshop where we can manufacture custom parts and do engine rebuilds.