Specifications
- Brand
- Mahle
- Part #
- 929811650-1
- UPC
- 929811650-1

Mahle MS Piston Set RB25DET 86.50mm Bore 71.7mm Stroke 121.5mm Rod 21mm Pin 11.5cc 8.5 CR - Single
$146.98
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Mahle MS Piston Set for RB25DET. Features 86.50mm bore and 8.5:1 compression ratio for improved performance.
Key Features
- Fits Nissan RB25DET 2.5L engines.
- Constructed from durable 4032 aluminum alloy.
- Features an 86.50mm bore size.
- Designed with a 71.7mm stroke and 121.5mm rod length.
- Includes a 21mm wrist pin diameter.
- Has a 11.5cc dish volume for an 8.5:1 compression ratio.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
Starting with a 4032 aluminum alloy construction, these Mahle MS pistons are built for the demands of the RB25DET engine. The 86.50mm bore size is a common upgrade for those looking to rebuild or enhance their engine's performance. This specific piston is designed with a 71.7mm stroke and a 121.5mm rod length, contributing to the overall engine geometry and performance characteristics.
With a compression height of 31.3mm and a pin diameter of 21mm, these pistons are engineered to integrate smoothly into your RB25DET build. The 11.5cc dish volume helps achieve an 8.5:1 compression ratio, which is a solid choice for many performance applications, offering a good balance between power and reliability. Each piston weighs in at 353g, contributing to a well-balanced rotating assembly.
Please note that this piston set is not CARB approved and cannot be shipped to California. It is sold as a single piston, so be sure to order the correct quantity for your engine.
Specifications
- Brand
- Mahle
- Manufacturer Part #
- 929811650-1
- UPC
- 929811650-1
Frequently Asked Questions
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Mahle MS Piston Set RB25DET 86.50mm Bore 71.7mm Stroke 121.5mm Rod 21mm Pin 11.5cc 8.5 CR - Single




