1 x Genuine Z40 Cam Kit
This listing is for 1 genuine z40 cam kit for Honda/Stomp style fitment. The kit contains the following:
Hi Lift Precision Ground Camshaft with bearings
Double High Strength Race Springs (extra stiff for high revs)
On a YX140 engine you will see power output at the rear wheel raise 2 HP, that's almost 20%. Add to that a port job & compression raise & if done correctly this cam will allow the YX140 engine to push 17.5 HP at the rear wheel, that's around 50% increase.
We have been using and selling this cam for 4 years. There is nothing that comes close, although you will see it re branded else where by some other minibike or monkey bike companies.
We know & refer to it ONLY as the Z40.
It fits the following engines:
YX150 (Honda style head engine only)
any others with Honda style cam
This cam can be modified to fit Lifan 125, 140 & 150, however it involves removing & replacing the bearings from your original cam which requires a bearing press.
All stomp 140 engines have this cam fitted as standard. The following video is of a superstomp 140, just listen to the engine SCREAM. It's a 100% stock engine using this very cam kit.
These pads are commonly found on the superstomp 140 models as show in the following video
WPB Power Parts is an online shop dedicated to bringing you genuine, original equipment, quality parts from Stomp and Welshpitbikes. We only sell branded pitbike parts bought from manufacturers or official importers, not direct from copy parts factories in
We have been in the pit bike business for more than 5 years and have extensive knowledge of Stomp, Welshpitbikes & Demon X models. Our warehouse covers more than 5000 square feet.
You can call us mon-fri 9 am - 5pm on the following number:
tel: 01730 720020
(Calls cost 10p per min)
We have an ever expanding team dedicated to delivering the ultimate in customer service. Please check our feedback to see what our customers think of us
The best method is to email us through ebay - sometimes you will get a response even at the weekend, however officially we are closed on Saturday & Sunday. Alternatively you cal call us on 01730 720020 mon-fri 9am – 5pm.
You can pay via paypal, or via debit/credit card over the phone for orders over £100.
We pride ourselves on same day dispatch. If you order before 12 noon, in 99% of cases, your item will be shipped on the same day using a 24 hour deliver service (mainland
For bike shipments please note that highlands, Islands & Northern Ireland are not covered by our standard shipping rates. To ship to these destinations it is an additional £100. Please call us if you are unsure.
WPB Power Parts is an online shop dedicated to bringing you genuine, original equipment, quality parts from Stomp and Welshpitbikes. We only sell Branded pitbike parts bought from official importers, not direct from copy parts factories in
We have been in the pit bike business for more than 5 years and have extensive knowledge of Stomp, Welshpitbikes & Demon X Pitbikes.
If you cannot see the part you are looking for, or you need technical assistance with anything you have bought from us, please feel free to give us a call on 01730 720020.
We are dedicated to delivering the ultimate in customer service. Please check our feedback for details.
We accept returns for up to 14 days should you decide you do not want your item & it must be returned unopened, fitted or used in any original packaging. Postage is non refundable unless we have made a mistake in sending you the incorrect item. We must be informed of damaged items immediately. If there is damage to any returned parts in return transit, you may be liable, so please ensure you package it well & send it back recorded delivery. If you have ordered your part in error, you will be liable to a re-stocking fee of 25% to cover our overheads.
Stomp Racing LTD VAT No.866414114 Company registration no 05255018. 'Stomp' is a registered Trade Mark