The dual-mode transmission is built specifically for Komatsu motor graders. The transmission provides full power shifting as well as inching capabilities and automatic shifting in the higher ranges.

A new variable displacement piston pump, improvements in the transmission and driveline components, and a sophisticated electronic control system for the engine and transmission all combine to achieve optimum and efficient operation. The new GD655-6 will consume up to 15% less fuel than the GD655-5.

Up to 5% reduction in fuel consumption (P mode)
Up to 15% reduction in fuel consumption (E mode)

(Compared with GD655-5)

Longest wheelbase in class for exceptional fine grading performance. A 25 degree articulation angle allows the GD655-6 to maintain a tight turning radius of 24'3" making this grader very maneuverable for tight road work and cul-de-sac operation.

The Komatsu SAA6D107E-3 engine is EPA Tier 4 Final emissions certified and provides exceptional performance while reducing fuel consumption. Based on Komatsu proprietary technologies developed over many years, this new diesel engine reduces nitrogen oxides (NOx) compared to the previous model.

Excellent visibility from the hexangular cab and layout of the rear side pillars boost operator confidence and productivity in all grader applications. Well-positioned blade linkage provides an unobstructed view of the moldboard and front tires.

Special Offers

Expires March 31, 2022
0.99% Financing on Komatsu Parts and Service

SMS Equipment offers solutions for your unique financial needs. We understand that cash flow is the key to any successful business. We can arrange to finance parts and service to help keep your cash flow where you need it to be.

Expires December 31, 2021
Parts Clearance Blowout

Get up to 60% off hundreds of parts from major manufacturers.

Expires March 31, 2022
NPK Break Into Winter Offers

Get 10% off labor and 15% off parts on SMS Equipment completed work.

Expires January 14, 2022
0.99% Financing for 48 Months on Komatsu Construction Equipment

Place your order today to take advantage of 0.99% financing for 48 months OAC on a wide range of Komatsu construction equipment.

Expires January 14, 2022
Komatsu Forestry Winter Financing Offers

On now: 0% financing for 42 months, OR 0.99% financing for 48 months on an extensive selection of reliable new Komatsu Forestry equipment, backed by Canada-wide support.

Expires December 31, 2021
Planning Pays: Preorder Komatsu Parts + Free Inspection

Contact your local PSR for your free machine inspection and book your 2022 component change outs today to save tomorrow.