Castrol Power 1 Ultimate 4T 10W-40
Fully synthetic 4-stroke motorcycle engine oil
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in Motorcycle Engine Oil£31.79
RRP £58.73 - save £26.94
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Verified Customer Reviews for Castrol Power 1 Ultimate 4T 10W-40
Our customers say…
Customers consistently praise this Castrol oil for its trusted quality, strong performance, and excellent value. Many say it delivers smoother gear changes, quieter running, and dependable protection, with several loyal users sticking with the brand for years across different bikes. The price is often highlighted as a major advantage, especially compared with other options. A few customers note packaging differences, but overall satisfaction is very high and repeat purchases are common.
AI-generated from the text of our verified customer reviews
Helpful?
Well packed fast delivery
02 Oct 2026 by Robert A
Well priced, fast delivery, a very easy company to deal with, recommended.
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Top quality bargain! 
02 Oct 2026 by Mark S
I went to do the oil change on my Triumph 1200 Scrambler and was amazed how much various companies were charging for Castrol Power 1 fully synthetic, then I thought hang on SPORTSBIKESHOP has good prices, I was right it was 25% cheaper than anywhere else
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Dealt with issues
29 Sep 2026 by Tony P
When ordered it turned out that it wasn't in stock. Comms from SBS were spot on. I was offered a range of options and chose to wait until in stock. Service cancelled only be tested when something goes wrong and SBS passed the customer service test. Well done. Product is good quality oil at a good price
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Sportsbikeshop.co.uk bargain and Worth every penny 
28 Sep 2026 by Scott O
I went to my local motorcycle shop and asked them for engine oil for my bike and was given a can of an unknown brand to me that I wasn't going to be happy with and which cost me £48, I returned it when I saw the offer on Sportsbikeshop.co.uk and purchased this top quality Castrol Power1 oil for just under £32 delivered, it was like liquid gold pouring out of the can and into the funnel and into my engine, knowing I'd bought the correct oil at a brilliant price has given me total piece of mind when starting my bike up, and knowing that the Castrol Power1 wil do exactly what I expect it to do and make my engine sound and feel like the rolls royce of engines for motorcycles.
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Absolutely brilliant!!
25 Sep 2026 by Grizzly
THE BEST OIL YOU CAN BUY..
Your engine will last twice the mileage..
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I mean... It's oil
24 Sep 2026 by Bov
It's oil. Bike hasn't exploded yet. Excellent price to be fair.
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Top stuff good price
24 Sep 2026 by Paul
Top spec oil at a very good price at Sportsbikeshop, keeps the bike running sweet for a year then looks after the shed & fence for a year, brilliant stuff.
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Performance oil
04 Sep 2026 by Derek
Perfect option for performance motorcycles
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Great price for a great product
01 Aug 2026 by Richard
Does exactly what it needs to but at a great price.
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The right oil at a great price
27 Jul 2026 by James
Decent oil, right for my bike and it was quite a bit cheaper here than anywhere else I could find.
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Top quality oil
15 Jul 2026 by Anonymous
I've never bought motorcycle oil before, and I haven't even used it yet. This oil has excellent reviews, so I trust the public.
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Quality product
14 Jul 2026 by Gary
Always use this oil in my bikes, never had a problem, great product and great service
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Quality oil at a competitive price.
14 Jul 2026 by Anonymous
‘Ultimate’ confidence in this product to protect my bike.
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Good quality, good price 
13 Jul 2026 by Mark
Good quality oil at a good price.
Quick delivery with Sportsbikeshop
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Quality oil
03 Jul 2026 by Lee w
Best price and service in the country
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Castrol quality
29 Jun 2026 by Paul S
Top quality oil at a great price from Sportsbikeshop.
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Top oil for a cheap price 
24 Jun 2026 by Dean R
Castrol oils are recognised and recommended for quality to use in my Honda cb250 hornet
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Quality 
24 Jun 2026 by Mark T
I always use Castrol in my car so Castrol was my first choice for my motorbike, Castrol is a quality product and was a good price at Sportsbikeshop.co.uk
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Reviews with photos - See all
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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