Best in 7 days
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- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 30 - Oct 5
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Royal Purple Max Boost Octane BoosterRoyal Purple Max Boost Octane Booster is a high performance octane booster and fuel treatment for racing applications that increases petroleum octane, reduces emissions, and enhances engine performance. Max Boost is the best fuel system stabilizer on the market that significantly boosts engine performance and efficiency. Perfect for racing engines equipped with carburetors, port fuel injection and direct injection, as well as turbocharged,
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.6 ★★★★★
Based on 942 reviews
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Product Reviews
★★★★★ 5
Emerald Beauty
Gem Type: Emerald, Ring Size: 9
This RING IS BEAUTIFUL!! The style and color is so bright and the setting is perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
★★★★★ 5
Perfect!
Gem Type: Emerald, Ring Size: 8
Quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Emerald ring is prettier than pictured.
Gem Type: Emerald, Ring Size: 7
Granddaughter loves it. Her mom does also, and expects one for her birthday. Perfect gift.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 5
Stunning! So happy I purchased!
Gem Type: Emerald, Ring Size: 10
I love emeralds but I wanted something in gold and Ross Simmons never disappoints. Only had it 2 days but I work in retail and receive so many compliments. It’s prettier than the picture, don’t hesitate to buy this!
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Reviewed in the United States on January 6, 2026
★★★★★ 5
Simple and Elegant
Color: White Gold - 3.5 mm, Ring Size: 8
I was looking for a band that would match my white gold engagement ring. This is it.
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Reviewed in the United States on May 27, 2026
