How do I confirm Stage 2 Performance Kit 4T; CSC Go!, 139QMB fits my scooter?

Compare the product name, SKU, photos, measurements, connector style, mounting points, and fitment notes with the part currently installed on your scooter before ordering.

What should I check before ordering Stage 2 Performance Kit 4T; CSC Go!, 139QMB?

Check your original part, scooter model, engine type, size, electrical connection, mounting style, and any listed compatibility notes. Many scooter parts look similar but are not interchangeable.

Stage 2 Performance Kit 4T; CSC Go!, 139QMB

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Stage 2 Performance Kit 4T; CSC Go!, 139QMB

Name: Stage 2 Performance Kit 4T; CSC Go!, 139QMB | Premium Scooter Parts
Brand: Chicago Scooter Company
SKU: PKCSCGO-2
Price: 418.17 USD
Availability: OutOfStock

$418.17

Part Number: 718046948476 SKU: PKCSCGO-2 Category: Performance

Out of stock

Part Number: 718046948476 SKU: PKCSCGO-2 Category: Performance

*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.

Product Details

Description

Stage 2 Performance Kit 4T; CSC Go!, 139QMB

Compatibility

Fits many 139QMB-based 50cc / 80cc scooter engines. Confirm measurements, connector style, and engine family before ordering.

Replacement Part Details

Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.

Temporarily Out of Stock This item is currently unavailable. Please check back soon.

Compatibility / Fitment

Use the fitment details below to confirm this part matches your scooter before ordering.

Engine Size: 50cc, 80cc, 4-Stroke
Engine Code: 139QMB
Fits Models / Common Applications: CSC and other compatible models may apply.
Fitment Notes: Performance

Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.

Common Fitment Questions

Q: Will this fit a 139QMB engine?

A: This SKU is listed as compatible with 139QMB engine-code fitment. Always compare your original part and scooter details before ordering.

Q: Will this fit a CSC?

A: This SKU is listed with CSC model fitment where the scooter also matches the listed engine or fitment notes.

Q: Is this for 50cc scooters?

A: This SKU is listed with 50cc engine-size fitment. Confirm exact model, year, and part style before ordering.

Additional information

Weight	21 lbs
Dimensions	36 × 12 × 12 in

Stage 2 Performance Kit 4T; CSC Go!, 139QMB

Takes your 50cc 139QMB to 72cc

Kit includes Skus:

0500-1071 SCOOTERWORKS LOW MOUNT EXHAUST; 139QMB

1100-1439 BLUE LINE BIG BORE KIT W/ HEAD 4T (72CC, 64MM VALVES); QMB13

1200-1051 6g NCY ROLLERS (16X13); 139QMB, TAO TAO, CSC GO.

1100-1361 BLUE LINE CARBURETOR (CVK,19MM); 139QMB

0900-1005 NCY PERFORMANCE CDI (AC, 6 PIN); GY6, 139QMB

1300-1110 PERFORMANCE FOAM POD AIR FILTER 38MM

Jetkh1 95 JET (KEIHIN PB STYLE CARBURETORS); GENUINE

1100-1256 NCY EGR BLOCK-OFF PLATE; GY6

0500-1008 NCY EXHAUST GASKET (STEEL); GY6

1200-1053 1000 rpm NCY COMPRESSION SPRING (PERFORMANCE); 139QMB

1200-1056 NCY PRESSURE PLATE; 139QMB

1200-1161 NCY, DRIVE FACE ASSEMBLY (ALUMINUM); 139QMB

1200-1050 NCY PULLEY (GOLDEN); 139QMB

Not legal for use in California on pollution controlled vehicles. Check local laws before installing.