$595.00 USD
$595.00 USD


Bigger displacement, more torque and more power.
Our 5150 Autosport 3.2L Stroker kit is specifically designed for BMW Gen1 B58 Engines.
Utilizing CP-Carrillo Pro-Xtreme Forged Pistons and Pro-Xtreme Rods, as well as the 5150 4340 Billet Steel Crankshaft, our stroker kits have stood up to the tests and trials of high horsepower applications time and time again.
Benefits of Stroking an Engine
- With higher displacement, your engine will produce greater power and torque, thanks to increased cylinder volume and improved air-fuel mixture combustion
- The longer stroke in the crankshaft increases the leverage on the connecting rods, resulting in increased torque output at lower RPMs
- Improved throttle response
- Increased horsepower
Kit Contents
- 5150 Autosport 4340 Billet Steel Crankshaft, 100mm Stroke
- Professionally turned, polished, and coated with anti-wear coating
- Fully balanced
- CP-Carrillo Pro-Xtreme Connecting Rods, 148mm Length
- CP-Carrillo Pro-Xtreme Forged Pistons
- CP-Carrillo Piston Wrist Pins
- CP-Carrillo Piston Rings
- CP-Carrillo Piston Wire Locks
Our stroker kit offers varying displacements, ranging from 3170 cc to 3246 cc, depending on the selected bore size:
82mm bore size results in a displacement of 3170 cc
82.5mm bore size yields a displacement of 3207 cc
83mm bore size provides a displacement of 3246 cc
Please note that the 82.5mm and 83mm Options require sleeving the engine block.
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.