170cc BIG BORE KIT | kit for Honda Grom® and Monkey®

Want to unleash all the power your Honda Grom® can handle? Our 170cc Big Bore kit is the perfect addition for you ! The kit includes a ceramic coated cylinder, 61 mm forged piston, rings, pin, gasket kit and banjo bolts. Its compression ratio of 11.5 to 1 will allow you to still use premium pump gas and keep the reliability of a stock motor. Made from the best components available on the market, our 170cc big bore kit will amaze you !

WARNING

THIS IS AN AFTERMARKET PART BUILT FOR RACING PURPOSES ONLY. KOSO IS NOT RESPONSIBLE FOR ANY DAMAGES CAUSED TO THE PARTS, VEHICLE, OR TO YOURSELF AND OTHERS.  ENGINE PARTS ARE NOT UNDER WARRANTY NOR IS COLLATERAL DAMAGE OR COST OF LABOR, IN CASES OF MALFUNCTION.

Specifications

  • Cylinder displacement: 169.2 cc
  • Cylinder material: Aluminum / Ceramic coated
  • Piston size: 61 mm
  • Piston type: Forged
  • Compression ratio: 11.5:1
  • Kit includes: piston, rings, pin, pin clips, gasket kit, banjo bolts and cylinder
  • fits Grom® and Monkey®

 

For more important tips and notes, see Honda GROM® FAQ page or download our Honda GROM® Caution PDF.

When using 170cc big bore kit only, customer must change or add the following parts:

Parts
Description
Mandatory
Suggested
Mini 3 – Air/Fuel ratio meter | Honda GROM
X
Mini 3 – Cylinder head temperature | Honda GROM
X
High flow injector | Honda GROM
X
Injector adaptor kit | Honda GROM
X
Hurricane racing air filter fits GROM only
X
Hurricane racing air filter fits MONKEY only
X
Connecting tube | fits GROM only
X
Intake tube | fits GROM only
X
34mm Throttle body | Honda GROM
X
High flow oil pump | Honda GROM
X
Camshaft | Honda GROM
X
ECU Modification
X
Addition of a fuel control box
X
Proper exhaust system must be used to prevent re-flow pressure and heat
X
Other

 

When using 170cc big bore kit only, customer must change or add the following parts:

* M = Mandatory | S= Suggested


Parts
Description
Mini 3 – Air/Fuel ratio meter | Honda GROM
S
Mini 3 – Cylinder head temperature | Honda GROM
S
High flow injector | Honda GROM
S
Injector adaptor kit | Honda GROM
S
Hurricane racing air filter fits GROM only
S
Hurricane racing air filter fits MONKEY only
S
Connecting tube | fits GROM only
S
Intake tube | fits GROM only
S
34mm Throttle body | Honda GROM
S
High flow oil pump | Honda GROM
S
Camshaft | Honda GROM
S
ECU Modification
M
Addition of a fuel control box
M
Proper exhaust system must be used to prevent re-flow pressure and heat
M
Other
S

 

$464.95 CAD

In stock

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