Get the guides, first
Seasonal UK driving advice and a heads-up when new stock lands. No spam, unsubscribe any time.


Every order ships free with tracking. Dispatch is usually within 1–2 working days and delivery within 3–8 working days.
Email us your order number within 30 days of delivery and we send the return steps the same working day. Refunds within 5 working days of receipt.
Send your registration or make, model and year to britishgarage.co.uk@gmail.com and we check the listing details against it before you order.
Maxima Castor 927 Racing Premix is a castor-oil-based, ester-enhanced 2-stroke premix engineered to deliver maximum power and protection in severe racing conditions.
Built around a highly refined castor oil backbone and fortified with exotic esters, Castor 927 is formulated to resist carbonization and excessive vaporization while preserving critical oil film thickness. The proprietary ash-free additive package reduces gum, deposits, and corrosion so engines remain clean and responsive through hard use. This description explains how the product performs, what advantages it offers for high-stress riding, and who benefits most from using it.
Castor 927 combines the natural lubricity of castor oil with surface-active esters that bond firmly to metal, creating a tenacious protective film even under extreme shear and heat. That film shields cylinder walls, crank journals, and piston skirts from wear while helping control friction-related temperature spikes.
The proprietary formulation focuses on minimizing gum and carbon buildup by resisting vaporization and carbonization at combustion temperatures. Keeping combustion areas free of sticky residues helps maintain consistent power delivery and reduces maintenance intervals.
The ester-enhanced recipe supports maximum power by maintaining optimal oil film thickness without over-atomizing or burning away at high temperatures. Riders typically notice crisp throttle response and consistent power across the rev range when the engine is protected and running clean.
Mix according to your engine manufacturer's recommended oil-to-fuel ratio, and use fresh, high-octane fuel when competing or performing at high loads. Regular inspection of spark plugs and exhaust condition helps confirm the mixture is correct and that the oil is delivering the intended protection.
Who is this for: Castor 927 Racing Premix is aimed at racers, professional mechanics, and aggressive recreational riders who demand durable protection and consistent performance from their two-stroke engines. It suits vintage and modern 2-stroke motorcycles, ATVs, snowmobiles, and other high-revving machines where strong film strength, low deposits, and reliable power delivery are priorities.
Q: Is Castor 927 compatible with all 2-stroke engines?
A: Yes—it's suitable for most 2-stroke motorcycles, ATVs, and snowmobiles; follow the manufacturer's oil-to-fuel ratio guidance.
Q: Does this oil reduce carbon deposits?
A: Yes—the vaporization-resistant, ash-free formulation helps minimize carbon and gum buildup for cleaner combustion chambers.
Delivery: free tracked delivery to every UK postcode on every order. Most orders are dispatched within 1–2 working days and arrive within 3–8 working days; you receive a tracking link by email as soon as it ships.
Returns: 30 days from delivery to return any unused item in its original packaging. Email us with your order number and we send the return instructions the same working day. Refunds go back to your original payment method within 5 working days of the item arriving with us.
Faulty or wrong item? Tell us within 30 days and we replace or refund it, including the return postage.
Seasonal UK driving advice and a heads-up when new stock lands. No spam, unsubscribe any time.
Thanks for subscribing!
This email has been registered!