WARNING: Cancer and Reproductive Harm - Choose your compression edge: Available in 18cc or 16.5cc combustion chamber variants for tailored power and reliability.
The Taida 2V Big Valve Cylinder Head is the premier airflow upgrade for Polaris RZR 170 racers and enthusiasts who demand maximum performance while remaining fully compliant in MOA and USAC classes. With oversized 30.5mm intake and 26.5mm exhaust valves, expert Taida porting, and two combustion chamber options (18cc standard or 16.5cc high-compression), this head lets you dial in the perfect setup—whether prioritizing peak horsepower, safer detonation margins, or class-specific compression rules.
Key Features & Benefits
- Oversized Valves – 30.5mm intake / 26.5mm exhaust deliver massive flow improvements over stock.
- Precision Taida Porting – Enlarged ports (30.5mm intake / 26.5mm exhaust) boost velocity, throttle response, and overall power.
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Dual Combustion Chamber Options
- 18cc – Balanced choice for reliable performance, excellent heat management, and easier tuning on pump fuel or varied conditions.
- 16.5cc – Higher compression for sharper throttle snap, more mid-range torque, and top-end pull—ideal for aggressive racing or when paired with premium fuel/octane boosters.
- Bolt-On Compatibility – 57mm head stud spacing fits stock RZR 170 engines (GY6-style B-block) and big-bore setups.
- Fully Assembled – Includes premium valves, springs, retainers, and seals ready for install.
- MOA / USAC Legal – Proven compliant with current MAO and USAC RZR 170 class rules—no clearance or spec issues.
- Upgraded Hardware – Comes with 6mm intake manifold studs/nuts and 8mm exhaust studs for secure, leak-free mounting.
What’s Included
- Fully assembled 2V big valve cylinder head (30.5/26.5mm valves)
- Intake and exhaust valves, springs, retainers, and seals installed
- 6mm intake manifold studs & nuts
- 8mm exhaust studs
Perfect For
- Polaris RZR 170 race and trail builds
- MOA-sanctioned events
- USAC-sanctioned competitions
- High-performance dune, desert, or backyard upgrades