# BHARAT Biker Royal 4T Plus 15W/50 (AT) API SN # Best 15W50 API SN Synthetic Engine Oil for 350cc to 650cc Bikes – Ideal for Royal Enfield & BS6 Motorcycles API SN Certified | Super Synthetic Technology | High Temperature Stability | Made in India ✔ BS6 READY ✔ SUPER SYNTHETIC TECHNOLOGY ✔ API SN CERTIFIED ✔ HIGH HEAT PROTECTION HARAT Biker Royal 4T Plus 15W50 is a premium 4 stroke bike engine oil specially engineered for high-performance motorcycles in the 350cc to 650cc segment, including Royal Enfield and other powerful bikes. Developed with advanced Super Synthetic Technology (SST), this 15W50 API SN engine oil delivers superior engine protection, smooth riding performance, and extended engine life, even under extreme riding and high-temperature conditions. Formulated using high-quality base oils and advanced additive technology, this synthetic bike engine oil provides excellent resistance against wear, oxidation, and sludge formation, ensuring a cleaner engine and consistent performance over longer intervals. Its high viscosity stability makes it ideal for heavy-duty engines, offering reliable lubrication during long-distance touring, highway rides, and stop-and-go city traffic. Designed for Indian road and climate conditions, this 15W50 engine oil for 350cc to 650cc bikes enhances pickup, reduces engine noise, and ensures smooth clutch and gear performance. It also helps improve fuel efficiency, minimize maintenance costs, and protect critical engine components, making it one of the best engine oils for Royal Enfield and performance bikes in India. Ideal for cruiser and touring motorcycles, this oil maintains strong viscosity, reduces engine wear, and ensures consistent performance in high temperatures, traffic conditions, and long-distance rides. ## COMPATIBLE BIKES Bike Model Brand Classic 350 / Bullet 350 / Hunter 350 Royal Enfield Meteor 350 / Thunderbird 350 Royal Enfield Himalayan 411 / Himalayan 450 Royal Enfield Interceptor 650 / Continental GT 650 Royal Enfield Dominar 400 Bajaj KTM Duke 390 / RC 390 KTM BMW G 310 R / G 310 GS BMW TVS Apache RR 310 TVS Honda CB350 / H'ness CB350 / CB350RS Honda Honda CB300R Honda Yamaha R3 / MT-03 Yamaha Yamaha R15 (Performance Riders) Yamaha Suzuki Gixxer 250 / V-Strom SX 250 Suzuki Other 350cc–650cc motorcycles All Brands Compatible with most 4 stroke motorcycles in the 350cc to 650cc segment including Royal Enfield, KTM, Honda, Yamaha, Suzuki, BMW & more. ## WHY SUPER SYNTHETIC TECHNOLOGY? Super Synthetic Technology ensures maximum protection and performance for high-capacity engines, especially during long rides, heavy load conditions, and extreme temperatures. **High Temperature Stability** Maintains viscosity in extreme heat **Superior Engine Protection** Reduces wear in high power engines **Cleaner Engine** Prevents sludge & deposits **Long Drain Performance** Reliable for long distance riding ## KEY BENEFITS ✦ **API SN Advanced Protection** — Maximum engine protection ✦ **Smooth Long Ride Performance** — Ideal for touring ✦ **Stable Gear Shifting** — Smooth clutch operation ✦ **Heat Resistance** — Performs in Indian climate ✦ **Extended Engine Life** — Reduces wear ## HOW TO USE 1. Start engine and warm for 2–3 minutes 2. Drain old oil completely 3. Replace oil filter if required 4. Refill recommended quantity of Bharat 15W50 oil 5. Check oil level and ensure proper level 6. Run engine for proper oil circulation ## FREQUENTLY ASKED QUESTIONS Which oil is best for Royal Enfield 350? 15W50 engine oil is recommended for Royal Enfield 350 as it provides better protection in heat and long rides. Is 15W50 suitable for 650cc bikes? Yes, 15W50 provides strong lubrication and protection for high-capacity engines. Is API SN better than API SM? Yes, API SN offers improved engine cleanliness, oxidation control, and protection. Typical Data Specifications: SR. NO. CHARACTERISTICS TEST UNIT RANGE 1 SAE Rating \- \- 15W50 2 Performance Level \- \- API SN 3 Appearance VISUAL \- C & B 4 Kinematic Viscosity @ 40°C cSt ASTM D445 mm²/s 156.8 5 Kinematic Viscosity @ 100°C cSt ASTM D445 mm²/s 17.85 6 Viscosity Index min. ASTM D2270 none 146 7 Flash Point COC °C ASTM D92 °C 248°C 8 Pour Point °C max. ASTM D97 °C \-27°C 9 TBN min. ASTM D2896 mgKOH/g 9.8 \*The specifications are subject to variations/development/customization. The information in this publication is based on our experience and reports from customers. There are many factors outside our control or knowledge which affect the use and performance of our products, for which reason it is given without responsibility. [📄 Download Product PDF](https://drive.google.com/file/d/1ZyEcdY_SAVUWbp0pmPg85XO0DEhd76UX/view?usp=sharing) ![best engine oil company in india](https://cdn.shopify.com/s/files/1/0771/4540/7511/files/new-bharat-femily-groups---Copy_bf53cd95-a5e1-445b-81f9-2b0669e22cb0.png?v=1778750514) ## Details - **Price:** 1932.0 INR - 153336.0 INR - **Vendor:** Bharat Lubricants - **Type:** SYNTHETIC TECHNOLOGY - **Tags:** 15W50 Bike Engine Oil, 4-stroke motorcycle oil, Best Oil for Royal Enfield, bharat biker royal 15w50, Bullet Engine Oil, Cristal lubricants, Heavy Duty Bike Oil, high-temperature bike oil, Liquid Gun, Long Ride Engine Oil, Motorcycle Engine Oil, premium bike oil, Royal Enfield Bike Oil, Signature lubricants ## Variants | Variant | Price | Available | |---------|-------|-----------| | 2.5 Litter's | 1932.00 INR | In stock | | 50 Litter's | 37934.00 INR | In stock | | 55 Litter's | 40943.00 INR | In stock | | 210 Litter's | 153336.00 INR | In stock | ## Images - best bullet engine oil manufacturer in Gujarat - best bullet engine oil manufacturer in Gujarat - best bullet engine oil manufacturer in Gujarat - leading lubricants manufacturer in Gujarat, India - BHARAT Biker Royal 4T Plus 15W/50 (AT) API SN - BHARAT Biker Royal 4T Plus 15W/50 (AT) API SN - BHARAT Biker Royal 4T Plus 15W/50 (AT) API SN --- > Source: [Bharat Lubricants](https://www.bharatlubricants.com/products/bharat-biker-royal-15w50) > Updated: 2026-06-09