SSP-G GY6 180cc Power Kit — complete kit contents including cylinder, head, and B-case crankcase SSP-G GY6 180cc Power Kit — complete kit contents including cylinder, head, and B-case crankcase
SSP-G B-case long crankcase with oil seals pre-installed and oil cooler ports SSP-G B-case long crankcase with oil seals pre-installed and oil cooler ports
SSP-G Super HP 2-valve cylinder head for GY6 180cc power kit SSP-G Super HP 2-valve cylinder head for GY6 180cc power kit
SSP-G 63mm big bore cylinder with 57mm B-case stud spacing — side view SSP-G 63mm big bore cylinder with 57mm B-case stud spacing — side view
SSP-G 180cc power kit hardware and gasket set detail SSP-G 180cc power kit hardware and gasket set detail
SSP-G GY6 180cc Power Kit — complete kit contents including cylinder, head, and B-case crankcase
SSP-G B-case long crankcase with oil seals pre-installed and oil cooler ports
SSP-G Super HP 2-valve cylinder head for GY6 180cc power kit
SSP-G 63mm big bore cylinder with 57mm B-case stud spacing — side view
SSP-G 180cc power kit hardware and gasket set detail

SSP-G

SSP-G GY6 180cc Power Kit

SKU 169-99
$499.00
Shipping calculated at checkout.
Description

The SSP-G GY6 180cc Power Kit is the most complete big bore solution on the market for 125cc and 150cc GY6 4-stroke engines. Unlike other kits that require machining, this Power Pack includes a purpose-built 63mm cylinder paired with a matching long-case "B-case" crankcase with oversized 57mm stud spacing — no case machining required. The cases arrive with all oil seals pre-installed and are drilled and tapped for an optional oil cooler.

What's Included

  • 63mm cylinder
  • Piston, rings, pin & circlips
  • Super HP 2-valve cylinder head
  • Valve cover
  • Camshaft & rocker arm assembly
  • Cylinder mounting studs
  • Complete gasket set
  • Bushings for right-hand and left-hand cases
  • Bearings
  • Long-case "B-case" crankcase (oil seals pre-installed)
Not included: Rocker shafts. Reuse your existing shafts or purchase SKU 169-412 separately.

Key Features

  • No machining required — 57mm B-case stud spacing matches the included crankcase perfectly
  • Oil cooler ready — cases drilled and tapped for optional oil cooler installation
  • Oil seals pre-installed — cases arrive ready to assemble
  • Super HP 2-valve head — high-performance head included for maximum flow
  • Made in Taiwan by SSP-G

Specifications

  • Cylinder Bore: 63mm
  • Stud Spacing: 57mm (B-case / long case)
  • Overall Left Crankcase Length: 20 inches
  • Compatible Engine: GY6 QMI/QMJ 152/157 (125cc/150cc 4-stroke)
  • SKU: 169-99

This product is intended for off-road use only and is not intended for use on public roads.

California Prop 65 Warning: www.p65warnings.ca.gov
Product Diagrams
Features
  • No machining required — 57mm B-case stud spacing matches included crankcase
  • Oil cooler ready — cases drilled and tapped for optional cooler
  • Oil seals pre-installed in crankcase for easy assembly
  • Super HP 2-valve cylinder head included
  • Complete kit — cylinder, head, cam, gaskets, bearings, and cases
Specifications

Bore: 63mm | Stud Spacing: 57mm (B-case long case) | Left Crankcase Length: 20 in | Engine: GY6 QMI/QMJ 152/157 (125/150cc 4-stroke) | Head: Super HP 2-valve | SKU: 169-99 | Origin: Taiwan
Model Fitments

GY6 125cc and 150cc 4-stroke engines: QMI152, QMJ157. Requires long-case (B-case) engine layout. No crankcase machining required. Off-road use only. Rocker shafts not included (use existing or order SKU 169-412).
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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