Taida RZR170 63mm Performance Cylinder Kit with Flat Top Cast Piston- MAO/USAC Legal

Turn your Polaris RZR 170 into a race-ready 180cc beast — fully legal for MAO and USAC classes.

This premium Taida big-bore cylinder kit is the go-to upgrade for RZR 170 owners who want serious power gains while staying 100% compliant with MAO and USAC rules. The precision 63mm bore combined with a durable flat-top cast piston delivers noticeable increases in horsepower, torque, and throttle response without the hassle of illegal modifications.

Key Features & Benefits

• 63mm Taida Cast Flat-Top Piston – Provides smooth, reliable performance with excellent heat dissipation and longevity.
• High-Tolerance Cylinder – Precision-machined for a perfect fit, reduced friction, and maximum power output.
• 57mm Head Stud Spacing – Direct bolt-on fit for all Polaris RZR 170 models (stock GY6-style engine).
• 180cc Displacement Upgrade – Boosts your engine from 170cc to 180cc for stronger mid-range pull and top-end speed.
• Dual Base Gasket Option – Includes both a thin gasket (high compression) and thick gasket (low compression) so you can tune exactly to your track or class requirements.
• MOA / USAC Legal – Designed and tested to meet all current MAO and USAC technical specifications — no guesswork, no tech-inspection headaches.

What’s Included in the Kit

• 63mm high-tolerance cylinder
• 63mm flat-top cast piston (complete)
• Piston pin
• 2 piston pin clips
• Thin base gasket (high compression)
• Thick base gasket (low compression)
• Head gasket

Technical Specifications

• Bore: 63mm
• Piston Type: Flat-top cast
• Head Stud Spacing: 57mm
• Displacement: 180cc
• Stroke Compatibility: 57mm (stock RZR 170)

Perfect For

• Polaris RZR 170 (2009–current models)
• MAO-sanctioned races
• USAC-sanctioned races
• Taida Part number # GY6-0105763
• Recreational trail riding or backyard performance builds