RYANSTAR RACING Crankcase Splitter & Flywheel Puller Kit — Hardened Steel, 360° Adjustable Arms

RYANSTAR RACING Crankcase Splitter Flywheel Puller is a heavy-duty engine separation tool that removes flywheels, cranks, and bearings from vertically split 2- and 4-stroke crankcases with adjustable arms and a full accessory kit.

This professional-grade crankcase splitter and crank puller is built for workshops, home mechanics, and small repair shops that need a reliable, repeatable way to separate engine cases and extract flywheels or bearings without damaging components. Constructed from hardened steel with a 360-degree adjustable arm system, the tool adapts to many bolt patterns and includes mounting bolts, install nuts, and separator plates for flexible use on motorcycles, cars, pumps, generators, and other machinery.

How does this tool make crankcase separation safer and faster?

The splitter guides the crankshaft assembly straight out of the case halves so you can avoid improvised prying that risks bearing and housing damage. Using the included puller and nuts concentrates force where needed and minimizes side loads on seals and shafts.

• 360° adjustable arms for centered, even extraction
• Hardened steel construction for consistent leverage
• Accessory set (mounting bolts, nuts, separators) for ready setup

Which engines and parts is it compatible with?

Designed for vertically split 2-stroke and 4-stroke crankcases, this puller works across many motorcycles, small cars, pumps, generators, and machine-bearing applications. Note: it is not suitable for specific models like Yamaha Raptor 660 and certain Kawasaki Tecate sizes listed in the product notes.

• Motorcycle and bicycle flywheels and crankshafts
• Pumps, generators, and general machine bearings
• Not for Yamaha Raptor 660; excludes Kawasaki Tecate 250, 125/144/150

What comes in the kit and how do you set it up?

The package includes the primary crank puller, two separator plates, six mounting bolts, and eighteen install nuts so you can match different bolt patterns without extra purchases. Setup involves fitting the adjustable arms to the flywheel bolt pattern, threading the install nuts, and turning the puller to withdraw the assembly evenly.

• 1 × crank puller and separator assembly for extraction
• 2 × crankcase separator plates for alignment
• 6 × mounting bolts and 18 × install nuts to fit varied bolt patterns

Will this tool protect delicate parts like bearings and seals?

The tool’s design focuses on axial, centered pulling which significantly reduces lateral stress on bearings and seals compared with hammering or random prying. By extracting the crank or flywheel in a controlled manner you lower the risk of scoring housings and misaligning shafts.

• Centered pull prevents off-axis loads on bearings
• Smooth separation helps keep mating surfaces intact
• Reusable hardware reduces risk of makeshift damage

Who this tool is for: mechanics, restoration hobbyists, and garage DIYers who regularly service small engines, motorcycles, or stationary equipment and want a durable, adjustable tool to remove crankshafts, flywheels, and bearings safely. If you need a versatile separator that covers many bolt patterns and comes with the necessary fasteners, the RYANSTAR RACING Crankcase Splitter Flywheel Puller provides a professional-level solution that reduces repair time and limits collateral damage to components.