

FAQ
When does the promotion start and end?
The whole event runs from September 21 to September 30 (PST Time).
What discount codes are available and how to use them?
Sitewide Discount
- 12% OFF sitewide throughout the whole event: Code SS12
Clearance Items Discount
- 20% OFF for selected clearance products: Code CL20. It can be combined with SS12 in one order for different products.
- 30% OFF for selected clearance products: Code CL30. It can be combined with SS12 in one order for different products.
Can multiple discount codes be stacked on one order?
Discount codes cannot be stacked and applied to the same single item. However, you can enter multiple different codes in one single order. Each individual product will only apply the highest applicable discount code. It means you can Enter Code: SS12, CL20 togethter.
What is the shipping timeline for my order?
- All items except tuners: Shipped within 24 hours after payment, delivered in 3–7 business days.
- Tuner products: Will be shipped 2 business days later than regular items, delivery lead time remains 3–7 business days after dispatch.
Can I modify or cancel my order after applying the discount code?
Order cancellation or address modification is acceptable before shipment. If the order has already been dispatched, please follow our return & exchange policy to apply for after-sales service. Discount will be recalculated for partial returns.
What if my discount code does not work at checkout?
- Double-check the code spelling
- Confirm your order falls within the valid PST promotion period;
- Verify the product category matches (CL20 codes only for clearance goods);
- Clear browser cache or switch devices to try checkout again.













