Grand River Racing
  • Home
  • Engineering and Design
  • Prototyping
  • Performance Engine Work
  • Custom Exhaust
  • Local Powersports Repair
  • More
    • Home
    • Engineering and Design
    • Prototyping
    • Performance Engine Work
    • Custom Exhaust
    • Local Powersports Repair
Grand River Racing
  • Home
  • Engineering and Design
  • Prototyping
  • Performance Engine Work
  • Custom Exhaust
  • Local Powersports Repair

Performance Engine Work

Two Stroke Porting

Port work starts at 250. Per cylinder, all dirt bikes, atv, snowmobile, kart

Banshee

Competition port. 500.

Pro Port. 700.

Outlaw. 1000.
Extreme Triple port. 1500. 

Four Stroke Head Porting

Starting at 200. Per cylinder for most 4 valve heads

Crank Rebuilding

110.  Per cylinder. labor only

Pin and weld. 80. per cylinder 

True and weld only, most cranks. 80.-100. 

Crank Stroking

Starting at 250. Per cylinder, machine work only. Plus assembly. Ex. Banshee 7mm. 740. Labor only.   Includes true and weld.  

Cylinder Bore and Hone

90. per cylinder bore and micro hone

Cylinder repair, resleeve, and Big Bores

We can repair, weld, or resleeve almost any cylinder. We make and install custom big bore sleeves. Prices start at 180. To install new sleeve, bore, and micro hone to fit piston. 

Performance Transmission

Banshee Auto 1-4

450

Full auto 1-4. clutch 5 and 6

Banshee full Auto 1-5

600

Full auto 1-5 no 6th gear. 

Auto Transmission non Banshee

All other non Banshee transmissions are available and prices start at 450. depending on configuration 

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