This product is not intended for use on public roads or land.

Not intended for use on public roads or land. For off-road and closed-course competition use only.

Key Features

• 22mm Slide Carburetor: PZ22 slide-type design with 25mm venturi side opening for responsive throttle on 110cc 125cc engines.
• 48mm Bolt Hole Spacing: Standard flange pattern for direct bolt-on fitment on most 110cc 125cc pit bike and ATV engines.
• 40mm Air Filter Outlet: Fits standard 40mm pod or box-style air filters.
• Left-Side Choke Lever: Choke on left with rear-facing intake (right side if intake faces forward).
• Mikuni-Style Construction: JAPAN-T/A casting, brass pilot jet, and quality float bowl assembly.

Compatible Vehicles & Engines

Pit Bikes & Dirt Bikes: Honda CRF50, CRF70, XR50, XR70, SSR, Apollo, Coolster, Kayo, and Xpro 110cc/125cc models.

ATVs & Quads: TaoTao, Sunl, Kazuma, Roketa, and Coolsport 70cc, 90cc, 110cc, and 125cc utility quads.

Go-Karts & Mini Bikes: Custom or stock frame setups running small-block industrial engines.

Chinese Horizontal Engines: 110cc and 125cc semi-automatic or manual clutch engines (such as the 152FMH).

Small-Block OHV Engines: Frequently adapted with a specialized manifold as a performance upgrade for the Predator 212 (Hemi/Non-Hemi), Honda GX200, Predator Ghost, and similar 196cc 225cc go-kart engines.

Technical Specifications

• Type: PZ22 slide carburetor
• Venturi Side Opening: 25mm
• Bolt Hole Spacing: 48mm
• Air Filter Side Outer Diameter: 40mm
• Main Jet: 95
• Idle Jet: 15
• Choke: Left side (rear-facing intake)

California Prop 65 Warning: www.p65warnings.ca.gov

• Keihin CVK-style body with 32mm intake bore
• Manual choke choke cable not included
• Pre-jetted with #138 main jet and #60 idle jet
• Fits 125cc and 150cc GY6 4-stroke engines
• Compatible with full-size street-legal scooters, ATVs, and off-road karts

Specifications

• Intake Bore (Inner Diameter): 32mm
• Outer Diameter Air Filter Side: 50mm
• Outer Diameter Intake Side: 38mm
• Main Jet: #138
• Idle Jet: #60
• Choke: Manual (cable not included)
• SKU: 114-33
• Weight: 1.6 lbs
• Dimensions: 7" x 6" x 6"

Compatible Makes

Avanti, Baja, Baotian, Baron, Bashan, Boss, Bravo, CFMoto, Diamo, Dotera, Honda, JM Star, Kazuma, Kymco, Lifan, Qingqi, Redcat, Roketa, Schwinn, SUNL, Strada, Tank, Terminator, Vento, Verucci, Wildfire, X-Treme, Yamati, YongKang, and various other GY6-based makes and models.

This product is not intended for use on public roads or land.

California Prop 65 Warning: www.p65warnings.ca.gov

Eliminate mid-range bogging and transform your scooter s acceleration with the OKO 30mm High-Performance CVK Carburetor. Unlike standard 24mm or 26mm factory units, this oversized 30mm carburetor features a built-in accelerator pump that delivers an immediate squirt of fuel when you crack the throttle, ensuring crisp, bog-free power delivery from a standstill.

Technical Performance Features

• Integrated Accelerator Pump: Solves the common "flat spot" in GY6 acceleration by providing supplemental fuel during rapid throttle transitions.
• 30mm Oversized Bore: Increases airflow capacity, making it the perfect match for 150cc engines equipped with big-bore kits (170cc 180cc).
• CVK Constant Velocity Design: Maintains optimal air-to-fuel ratios across varying altitudes and temperatures, offering smoother rideability than manual slide carburetors.
• Tunable Jetting: Comes pre-configured for 150cc engines but includes additional pilot jets (#35, #40) to help you dial in your specific exhaust and intake setup.

Comprehensive Fitment Guide

This carburetor is a high-performance bolt-on for GY6 125cc/150cc 4-Stroke (QMI152/QMJ157) engines found on:

Technical Specifications

• Bore Size: 30mm
• Engine Mount (OD): 36mm
• Air Filter Mount (OD): 46mm
• Installed Main Jet: #126
• Installed Idle Jet: #40 (Extras included: #35, #40)

Tuning Tip: Because this is a 30mm performance unit, it requires more air than a stock 150cc airbox can usually provide. We highly recommend pairing this with a 46mm High-Flow Clip-on Air Filter to realize the full horsepower gains.

Part Number: 151-182
Manufacturer: OKO

Avanti, Baja, Baotian, Baron, Bashan, Boreem (BMS), Boss, Bravo, CFMoto, Diamo, Dotera, Eton, GY6 QMI/QMJ 152/157, Honda, JM Star Tomahawk II, Kazuma, Kymco, Lifan, Qingqi, Redcat, Roketa, SUNL, SYM, Schwinn, Strada, TGB, Tank, Tank Racer-150DE /150T-7A, Tank Racer-150DS/150T-7B, Tank Touring DE, Terminator, United Motors, Matrix 150, Various unlisted makes/models, Vento, Vento Phantom, Verucci, Verucci Viper 150GTX, Wildfire, X-Treme, Yamati , YongKang, ZNEN

This product is not intended for use on public roads or land.

NOTE: This product does not fit CVK-style carbs. 

Specifications:

• Includes manual choke actuator, plunger and spring
• Choke cable is not included, but is available online
• PWK manual choke actuator mount OD: 11mm
• PWK manual choke plunger OD: 8mm
• Overall length: 40mm (1.6")
• Does not fit CVK-style carbs

Compatibility: PWK carburetors, including: Polini CP, Polini PWK, and Keihin and OKO D slide PWK carburetors commonly found in GY6 and 139QMB bikes

139QMB-based 50cc / 80cc engines with the following engine codes:

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

Don't see your engine listed? If the engine code includes "QM" or "FM" and you use a PWK carb, this product is compatible with your vehicle.

About RDR: RDR is a Taiwanese manufacturer who specializes in performance and styling parts for scooters and motorcycles.

Does not fit CVK style carburetors.

• #138 Main Jet
• #48 Idle Jet

This product is not intended for use on public roads or land.

• Plug Style: 2-Pin Male
• Wire Length: 26 Inches
• O-Ring Diameter: 20mm
• Metal Barrel Diameter: 7mm
• Not Compatible with Mikuni Branded Carburetors

Does not fit PWK style carburetors.

• #105 Main Jet
• #40 Idle Jet

This product is not intended for use on public roads or land.

Note: This is a 30mm-specific kit. It will not fit standard 18mm (50cc) or 24mm (150cc) carburetors found on stock GY6 engines. Please verify your carburetor size before ordering.

What's Included

• #128 Main Jet: Optimized for high-flow 30mm venturi requirements.
• #40 Idle Jet: Provides a stable, reliable idle and smooth low-end transition.
• Compatible Gaskets & O-Rings: Precision-fit seals for CVK-style bowls.

Technical Specifications

• Carburetor Type: CVK (Constant Velocity)
• Venturi Size: 30mm
• Brand: RDR (Taiwan)
• Application: Performance Tuning / Repair

Model Fitment & Compatibility

About RDR: Based in Taiwan, RDR specializes in professional-grade tuning components for the global scooter racing industry, known for higher manufacturing tolerances than standard OEM kits.

California Prop 65 Warning

• Available in Black (BK) or Chrome (CHR) lever finish
• Universal fit for PWK-style carburetors
• Overall length: 27.25 inches
• Sleeve length: 23.5 inches
• See related items for the compatible choke plunger kit

California Prop 65 Warning: www.p65warnings.ca.gov