Castrol Power 1 Ultimate 4T 10W-40
Fully synthetic 4-stroke motorcycle engine oil
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in Motorcycle Engine Oil£36.08
RRP £58.73 - save £22.65
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Verified Customer Reviews for Castrol Power 1 Ultimate 4T 10W-40
Our customers say…
Customers consistently praise Castrol oil for its quality, reliability, and excellent pricing. Many have switched from other brands citing cost-effectiveness as a primary motivator without compromising performance. Customers appreciate its contribution to smoother gear changes and engine protection, even over significant mileage. The blend offers both performance and economic advantages, with several noting it feels high-performance despite the packaging updates. Castrol's long-standing reputation continues to inspire trust among these discerning users, ensuring repeated purchases.
AI-generated from the text of our verified customer reviews
Helpful?
Use it in all my bikes
03 May 2026 by Aero
Top quality oil for budget money.
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Bike oil
29 Apr 2026 by john
Always buy my oil from SBS, very competitively priced, anything motorcycle related I buy from here, never had 1 issue, highly recommend
Helpful?
Great price for a trusted brand.
29 Apr 2026 by Steven H
Great price and quickly dispatched. I'm sure it will be a quality oil.
A couple of things to note, I changed from a different brand and this bottle doesn't have a built in pouring cap so you'll probably need a little funnel. And this isn't dyed like others so it's a struggle to see it on the dipstick. Neither are major bad points but worth remembering at ordering time.
Helpful?
Engine sounds smoother
28 Apr 2026 by Gary S
Definitely sounds quieter and runs smoother. Gear changes are also smooth and precise along with the quickshifter working great. Definitely buy again.
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Genuine product
24 Apr 2026 by Russell
Use this oil everytime. Best protection for my z1000.
Helpful?
Great service and top quality package/delivery
21 Apr 2026 by John s
Very good price, items instock ready for dispatch, extremely well packaged and notified at all points. 100% be back for more items in the future.
Got the bonny back on the road intime for the sun
Helpful?
Best for the bike
11 Apr 2026 by Andrew B
It's Castrol; the best, at a very competitive price, delivered to my door the day after ordering it.
Excellent service.
Helpful?
Excellent Service
08 Apr 2026 by Kev
Excellent service from the guys at sportsbikeshop. Fast delivery and for the best price available for Power 1 Ultimate. Will definitely use these guys again next time.
Helpful?
Great product and price
08 Apr 2026 by Keith B
A great supplier of motorcycle clothing and accessories. Good prices and fast delivery
Helpful?
Good price for good quality
30 Mar 2026 by Shannon
Perfect spec for the Himilayan 450. Always liked Castrol oils. I used to supply the bottles to several oil manufacturers including BP/Castrol and as long as the oil has the ratings your bike needs you're good. But I still change oil and filters twice as often as needed just for peace of mind.
Helpful?
Excellent price
24 Mar 2026 by Anonymous
Excellent price and available from store
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Perfect oil for bike
21 Mar 2026 by Zac
Purchased to change oil in my Z900. Great product, will purchase again.
Helpful?
Great price
20 Mar 2026 by Anonymous
Time for annual oil change. Shopping around, and found what I wanted for a great price. Arrived in good time, and well packaged.
Another great purchase from Sportsbikeshop.
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Great product, good price
16 Mar 2026 by William
Best price on market, quick delivery
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Name change from Power 1 racing to Power 1 Ultimat
12 Mar 2026 by Paul
Been running 2 bikes on Castrol oil for past 10 years.
Helpful?
Trustworthy oil
09 Mar 2026 by Anonymous
Bought this oil for years and now improved for the modern engine
Helpful?
Castrol oil
07 Mar 2026 by Dave R
High performance oil. Aways used it always will.
Sportsbikeshop had the best offer I could find with delivery being fast and free.
Helpful?
Good quality race oil
06 Mar 2026 by Anonymous
Good quality and affordable
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Description
Manufacturer
Castrol Power 1 Ultimate 4T 10W-40
- Engineered for outstanding performance
- Suitable for modern high performance 4-stroke motorcycles
- 50% better wear protection vs industry limits
- Enables smooth clutch engagement
- Keeps the engine cool over an extreme 12,000 kms test
- Maintains engine power over 48,000 kms
Formerly known as Castrol Power 1 Racing, Power 1 Ultimate's 5-in-1 formula is engineered to give your bike outstanding performance with 5 ultimate benefits. Castrol Power 1 Ultimate is also suitable for modern high performance 4-stroke motorbikes to which it offers outstanding performance and protection.
Excellent Acceleration
Castol Power 1 Ultimate is proven to accelerate ahead of a competitor's market general oil for bikes.
Excellent Protection
Castrol Power 1 Ultimate provides 50% better wear protection vs industry limits across bikes and scooters.
Smooth Riding
Castrol Power 1 Ultimate enables smooth clutch engagement.
Keeps the Engine Cool
Castrol Power 1 Ultimate keeps the engine cool even over an extreme 12,000 kms test.
Enduring Performance
Castrol Power 1 Ultimate maintains engine power over 48,000 kms in a racetrack durability test.
| API Standards: | API SN |
| JASO Standards: | JASO MA2 |
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