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Upgrade your GM LS engine with the Mahle MS Piston Set designed specifically for 428 cubic inch applications. This high-quality piston set features a 4.130-inch bore diameter and a 4-inch stroke, ensuring precise fitment and optimal engine performance. Crafted with attention to detail, these pistons are engineered for durability and efficiency, making them suitable for high-performance builds and racing applications. The set includes eight pistons, each with a compression ratio of 11.8:1, providing excellent power output and fuel economy.
Constructed with a lightweight 450-gram design, these Mahle pistons incorporate a 0.927-inch wrist pin and a 6.067-inch connecting rod length. The pistons are coated with phosphate and Grafal to enhance wear resistance and reduce friction, ensuring longevity under demanding conditions. The design also includes a -2.5cc dish volume, contributing to the desired compression ratio for optimal combustion. These pistons are not carb-compliant but are suitable for professional engine builders requiring acknowledgment for carb adjustments.
Manufactured with precision and quality, the Mahle MS Piston Set complies with Prop 65 regulations, ensuring safety and environmental standards are met. The pistons are built with compatibility in mind, designed for automotive applications and suitable for custom engine builds or rebuilds. Easy to install, this set provides a reliable foundation for enhancing your engine’s horsepower and efficiency, making it an excellent choice for enthusiasts and professional mechanics alike.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
