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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!

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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).

Castrol Power 1 4T 15W-50

Part synthetic 4-stroke motorcycle engine oil

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Customer Reviews for Castrol Power 1 4T 15W-50

Castrol Power 1 4T 15W-50
July 24, 2020


When your bike requires the kind of oil no one else seems to stock Sportsbikeshop comes to the rescue. Easy to order, super fast delivery. Can't ask for more than that.

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Castrol Power 1 4T 15W-50
May 29, 2020

always use this stuff

as described and delivered as advised, better still SBS price matched within the hour this company really are head and shoulders above anyone else i buy from online.

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Castrol Power 1 4T 15W-50
October 17, 2018

Superb service as usual

The product speaks for itself, service by Sportsbikeshop was the usual, prompt and efficient with the item well packaged. Why would you shop anywhere else?

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Castrol Power 1 4T 15W-50
June 5, 2017

Excellent service

Sportsbikeshop to the rescue once again, as this oil is difficult to get elsewhere.

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Castrol Power 1 4T 15W-50
October 12, 2016

Excellent service yet again

Once again Sportsbikeshop deliver the goods on time and at the right price. Almost everywhere else had a long lead time for this oil. Sportsbikeshop had it in stock ready for same day dispatch. Tracking info was excellent as always.

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Castrol Power 1 4T 15W-50
September 23, 2016

Bema service

This is the first service I have done on my BMWr1200gs and was not sure about what type of engine oil to use but after some research found this is OK. Done the service and it runs like a dream. SWEET.

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Castrol Power 1 4T 15W-50
June 15, 2016

Excellent service

Best price, best product, next day tracked delivery so I knew where the van was. Great customer experience.

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Castrol Power 1 4T 15W-50
August 5, 2015

Oil was spot on

Super fast next day delivery. Oil was spot on with smooth gear changes. Will be using this company again for future products.

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Castrol Power 1 4T 15W-50
April 24, 2015

Good quality oil for my Aprilia Shiver

Unable to find 15W-50 oil as recommended for my Aprilia Shiver. I was glad to see it was easily available on Sportsbikeshop.

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Castrol Power 1 4T 15W-50

  • Trizone Technology
  • Power release technology for max & sustained engine performance
  • Extreme high temperature air-cooled & water-cooled engine performance
  • No compromise engine protection
  • Complies with requirements of catalyst equipped engines
  • Good oil consumption control

NOTE Packaging may be different from picture shown.

Castrol Power 1 GPS 4T is a part synthetic 4-stroke engine oil designed for the latest generation of sport, touring and on-off road bikes from leading European and Japanese manufacturers. 10W-30 has been developed for engines that specifically require a low viscosity lubricant; 10W-40 is suitable for high performance bikes including highly stressed multi cylinder units; 15W-50 is particularly well suited for large sized, air cooled mono and twins. It is also well suited for high mileage engines that require good high temperature viscosity and oil consumption control. Castrol Power 1 GPS 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 SJ
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.

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