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Performance Engine Oils
Silkolene PRO 4 10w-50 XP Fully Synthetic Ester Bike Engine Oil

Silkolene PRO 4 10w-50 XP Fully Synthetic Ester Bike Engine Oil


Silkolene PRO 4 10w-50 XP - 1 Litre

1 Litre


Silkolene PRO 4 10w-50 XP - 4 Litres (Lube Cube)

4 Litres (Lube Cube)


Silkolene PRO 4 10w-50 XP - 20 Litres (Lube Cube Box)

20 Litres (Lube Cube Box)


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Silkolene PRO 4 10w-50 XP Fully Synthetic Ester Bike Engine Oil

Using 100% Synthetic Ester to provide increased power, optimum engine protection, ultimate performance and reliability. Proven formula developed in partnership with manufacturers and race teams.

During the development of XP, an extensive development program was conducted, new formulations rigorously tried and tested and compared with reputable competitor products in the same type engines. This research showed us what gave the best improvements across a range of requirements and led to the launch of our new and improved range of motorcycle engine oils utilising XP Technology:
  • 11% Fuel Savings
  • 18% Lower Oil Consumption
  • 3% Improved Power (BHP/TORQUE)

PDF Downloads:

Download the Technical PDFDownload the Safety PDF


  • One product range suitable for all high performance 4-stroke motorcycle engines On Road and Off-Road
  • Extensive racing experience and dyno analysis show significant increase in power output compared to conventional products plus improved fuel economy and lower oil consumption 
  • Advanced surface chemistry provides outstanding anti-wear properties giving vital protection to pistons and bores, cams and bearings even under race conditions 
  • Provides enhanced high temperature deposit control resulting in a cleaner engine and promoting longer engine life 
  • Suitable for gearboxes and transmissions where engine oil technology is specified,   outstanding gear wear and pitting protection 
  • Balanced frictional properties give precise clutch control / operation 
  • Also provides good corrosion protection, oxidation / nitration resistance, lower volatility


Approvals / Specifications

  • JASO MA2
  • API SM / SN Performance


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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We say...

"This is as good as it gets from Silkolene, and take from me it is as good as money can buy."