Updated Covid-19 information, including click and collect order details.

  • 60,000+ Reviewsfrom bikers like you
  • Award WinningMCN retailer of the year
  • Free UK DeliveryMainland ex H'lands (over £25)
  • 15+ Years OnlineTried, tested, trusted
  • Free Returns*Mainland UK over £25
  • Finance Available0% on orders over £300

60,000+ Reviews

Whilst we know a bit about bikes and bike kit, the best road testers out there are our customers, real bikers, just like you. If you're looking for advice on what to buy, you'll find over 60,000 independent product reviews which we've posted, unedited, for all to see. Whether it's a question about sizing, quality or something else, our customer reviews are quite simply, the best place to start.

Award Winning

There's a reason why our competitors spend so much time watching what we do, we believe in customer service levels beyond the norm and we're always looking for ways to improve. In late 2013 we were recognised for this by the bike industry's No.1 publication, Motorcycle News. As retailer of the year, we feel it's our duty to constantly better our offering and if you have any ideas, we'd love to hear from you!

Free UK Delivery

It's really simple, if you spend over £25 with us, delivery is free of charge to any mainland UK address (excluding Islands & Highlands).

15+ Years Online

We've been serving the motorcycle community for more than 15 years now and in that time we've grown to be the largest online retailer of motorcycle clothing & accessories in the UK.

Free Returns*

We now offer free returns on any UK Mainland order (excluding Highlands) over £25. Most importantly, returning an item to us is super simple. Just click here or on the 'create a return' link located at the bottom of every page, and create your return in under 1 minute.

Finance Available

Why wait? We now provide some of the best finance packages around to help spread the cost and get you on the road. We now offer finance on most orders from as little as £280 with 0% packages starting at only £300. The online application process is super simple too and takes around only 5 minutes to complete! The best part is, there's no paperwork to print and in most cases you'll have a decision in under 10 minutes. Just select finance as a payment method and take it from there!

Castrol Power 1 Racing 4T 10W-40

Best Seller
in Engine Oil

Fully synthetic 4-stroke motorcycle engine oil

View full details

Price From


Online Availability

Please select option above

Add to wishlist
Delivery & Returns
Seen it cheaper?
Get a price match
Quick find: 51673

Customer Reviews for Castrol Power 1 Racing 4T 10W-40

Castrol Power 1 Racing 4T 10W-40
November 16, 2020

Good oil

Use good oil and keep your engine in good condition.

Read more
Castrol Power 1 Racing 4T 10W-40
November 12, 2020

Only oil I'd use.

Recommended by Triumph for my Street Triple I wouldn't use anything else.

Read more
Castrol Power 1 Racing 4T 10W-40
October 27, 2020

Great product

Good product, does as it says in the tin. Very competitively priced compared to elsewhere. Not entirely sure if this is related, but it's reduced gear box clunking with my FZ6.

Read more
Castrol Power 1 Racing 4T 10W-40
October 22, 2020

Top notch!

Great quality, excellent price. Repeat purchase. Will buy this again. Using it for my Yamaha XJ6 Diversion.

Read more
Castrol Power 1 Racing 4T 10W-40
September 19, 2020

Oil is oil

Good price the exact amount for my bike in a 4 l can. Quick delivery and great communication.

Read more
Castrol Power 1 Racing 4T 10W-40
August 10, 2020


Perfect oil for my 125 - Amazing service from SportsBikeShop - really fault the service, quick delivery or price - Wish all online retailers where half as good as them

Read more
Castrol Power 1 Racing 4T 10W-40
August 8, 2020

Really pleased

This oil is excellent i will definitely be using it again. My bike has been ecu remapped and has a full arrow system so i thought that would be it for power etc. (Z1000 gen 4) But when I put this in and yes I know its oil and yes i couldn't believe it myself but I had a very noticeable change in acceleration/response. I'm not sure if its because I moved form semi synthetic to full synthetic or what but ill definitely be buying this again, and at the end of the day its castrol.

Read more
Castrol Power 1 Racing 4T 10W-40
August 5, 2020

Top class oil

The best oil as recommended by Triumph and at a rock bottom price, it's a no brainer!

Read more
Castrol Power 1 Racing 4T 10W-40
August 3, 2020

Oil and filter

Two really top class products..

Read more
Castrol Power 1 Racing 4T 10W-40
July 28, 2020

Oily good

Excellent oil and really smooth gear change now, will see if it is as good after 4000 miles when due a oil change. Usual good service from SBS,

Read more

Castrol Power 1 Racing 4T 10W-40

  • Trizone Technology
  • Tested to the extreme of temperature & engine conditions
  • Extreme high temperature air-cooled & water-cooled engine performance
  • Enhanced throttle response for faster acceleration
  • Excellent high speed oil consumption control & volatility
  • Excellent shear stability to prevent viscosity break down
  • Complies with requirements of catalyst equipped engines

NOTE Packaging may be different from picture shown.

Ultimate Performance for extreme riding on road and track, Castrol Power 1 Racing is a fully synthetic 4-stroke engine oil for Sport, Super Sport and Race Replica motorcycles from leading European and Japanese manufacturers. Castrol Power 1 Racing employs the very latest Trizone Technology that gives optimum protection to the engine, clutch and gears even under the most arduous conditions, including sustained operations at high rpm.

API Standards:API SL
JASO Standards:JASO MA2



Castrol is the world leading manufacturer, distributor and marketer of premium lubricating oils, greases and related services to automotive, industrial, marine, aviation, oil exploration and production customers across the world.

Castrol offers lubricants for virtually all domestic, commercial and industrial applications. With their 13 R&D centres globally, they develop and test hundreds of new products every year.

See all Castrol products
Questions and Answers

Questions and Answers

  • Would this be a good oil for my tax 600r thundercat or would the v spec fully synthetic oil br better Thanks

    May 31, 2018

    Castrol recommend the Power 1 Racing for your Thundercat.

  • Hi, Just to double check, I have a 2002 Suzuki SV650S, would this oil be a good choice for the bike? Thanks, Connor

    November 3, 2017

    The recommended oil for your SV is Power 1 Racing 4T 10W-30, but in the UK climate you can use 10W-40.

View similar products

Browse all Castrol Engine Oil, Browse all Motorcycle Engine Oil

You won’t get it cheaper. Our Price Match Promise.

Find it cheaper at any major motorcycle accessory retailer, online or in-store and we‘ll match it.

How to request a price match.
Your Recently Viewed items
Castrol Power 1 Racing 4T 10W-40


Was $15.58
What people say about us