Orion Motor Tech Crankcase Splitter & Installer Kit — 15‑Piece, 360° Adjustable Arms, Chrome‑Plated Steel

The OMT Crankcase Splitter and Installer Tool is a 15-piece, adjustable crankcase separation and crankshaft installation kit designed for safe, damage-free removal and fitment of crank assemblies in most 2‑stroke and 4‑stroke small engines.

Whether you're rebuilding a dirt bike, ATV, motorcycle or other small-engine vehicle, this Orion Motor Tech kit combines a splitter, installer, adapters and fasteners into one set so you can separate crankcase halves and press a crankshaft back into place without improvising with makeshift tools. The set uses hardened AISI 1045 steel with chrome plating and blackening for corrosion resistance and durability, and its 360° adjustable arm configuration accommodates many bolt patterns for a cleaner, more controlled job.

How does the 360-degree adjustable arm design protect my engine during crankcase splitting?

The adjustable three-arm layout lets you position contact points to match the crankcase bolt pattern and apply even, centered force as the halves separate. Because load is distributed across three arms, the risk of bending or gouging mating surfaces is reduced compared with single-point pry methods.

• Three pivoting arms adapt to asymmetrical bolt layouts for stable separation.
• Even force distribution prevents uneven stress on mating surfaces.
• Chrome-plated steel construction minimizes flex under pressure.

What components are included and how do they help during installation?

This 15-piece kit contains the main crankcase splitter body, a crankshaft installer, three crankshaft adapters, two steel guide rods, M6 and M8 bolts, and M10/M12 screws to cover common crank sizes. Together they let you extract the crank, align the halves, and push the crank assembly back into the case in a controlled manner.

• Crankcase splitter body — central hub for arm mounting and force application.
• Crankshaft installer and adapters — adapt to different crank dimensions for proper seating.
• Steel rods and bolts — provide alignment and secure positioning during installation.

Which engines and models will this OMT tool kit work with, and what are the exceptions?

The kit is built for broad compatibility with most 2‑stroke and 4‑stroke motorcycle, dirt bike and ATV crankcases where a three-arm puller and basic adapter sizes will fit. However, a few models with unique crank or case designs are excluded and require model-specific tools.

• Compatible: most small‑engine motorcycles, dirt bikes, ATVs, and similar applications.
• Not compatible with: YMH Raptor 660, Kawasaki Tecate 250, KTM 125/144/150.
• Adapter set allows use with many crank diameters using M10 and M12 screws.

How durable is the kit and what maintenance keeps it working long-term?

Forged from structural-grade AISI 1045 steel, then chrome-plated and blackened, the components resist wear and corrosion under workshop conditions. Simple maintenance—cleaning after use, light lubrication of threads, and storage in a dry place—keeps threads reliable and prevents surface rust.

• High-strength steel resists bending and repeated use.
• Protective plating reduces corrosion from oils and shop solvents.
• Regular cleaning and thread lubrication preserve performance and fit.

Who is this for: The OMT Crankcase Splitter and Installer Tool is aimed at professional mechanics, home engine builders and hobbyists who perform crankcase work on motorcycles, dirt bikes and ATVs and want a single, robust kit to split cases and install cranks without resorting to improvised methods. If you work on the excluded models listed above or need factory-specific pullers for unusual crank geometries, verify fitment before purchasing.