Make sure the crankcase mating surface is perfectly clean and install a new cylinder gasket. Step 11. Step 7. Step 3. Welcome to the first part of our project to make a 2018 Honda Grom faster, and to improve its handling. Step 8. Watch the clip below to see the ring gap segment of our Honda Grom Big Bore Kit video. Remove the seat, plastics and shrouds. VERY IMPORTANT: ALL Big Bore Kits requires an Aftermarket Fuel Controller and A/F Monitor (not included) We highly recommend the Dyno Jet PCV, and WBC2 for proper control of the Fuel, maximum performance, and Longevity. Honda Grom Big Bore Kit - FINBRO - Install Part 1 - Great Low … Please have one purchased and installed before your first engine start up. You no longer have to piece parts together with expensive components to get more power out of your bike. Step 1. Step 10. Step 5. Use a feeler gauge to measure the clearance between the ends of the piston ring, and compare it to the piston manufacturer’s charts. Sell your vehicle through our consignment program! Step 2. Now that the big bore kit is installed on our Honda Grom and the top end is rebuilt, our next project is to install a larger throttle body, a high-flow air filter, and an upgraded exhaust system. As you can see in the comparison table below, you have a lot of options. Next, remove the collar, washer and the tensioner arm. Make sure the mating surfaces are completely clean, and install a new left crankcase cover gasket. Step 3. Step 7. Loop the timing chain back over the cam sprocket, and reinstall the cam sprocket with the timing mark aligned with the mark in the cylinder head. Step 3. Remove the circlip and piston pin from the piston, and slide the piston off the connector rod. Apply a thin layer of grease to the underside of the new cylinder head cap bolts. Install heavy duty valve springs, retainers, seats, and keepers. Step 5. Install the new cylinder (included in the KOSO big bore kit) over the piston. Step 1. Step 3. Step 1. Put the piston over the connector rod with the triangle mark facing down (toward where the exhaust will be once the engine is reassembled), then push the piston pin through the rod and install the second piston circlip. The DHM 186 kit includes everything you need to convert your Honda Grom in to a big bore machine. Honda MSX125 (Grom) Yuminashi 160cc Ultimate Big Bore kit … Kits will vary in size, additi… Next, remove the cam sprocket from the cylinder head. Make sure the mating surfaces are clean, and install the new cylinder head (included in the KOSO big bore kit). The exhaust valve gaps should be 0.007” or 0.1778mm. Position the new piston so that the small triangle denoting the exhaust side of the piston is at 6 o'clock, then install the new piston rings in the following order and set each piston ring gap as follows: Watch the clip below to see the piston ring installation segment of our Honda Grom Big Bore Kit video. Watch the clip below to see the cylinder head installation segment of our Honda Grom Big Bore Kit video. Reinstall the flywheel, the washer and nut, then hold the flywheel with a sheave holder and torque the nut to 64Nm or 47 foot-pounds. Reinstall the old cam cover, followed by the timing cap and crankshaft cap into the left side crankcase cover. Step 8. From the factory, your Grom packs a 125cc engine. This is the biggest bore kit on the market. Take the thermostat from the old cylinder, install it in the new cylinder, and reattach the cable and bracket. High Profile Cycles has been an Authorized Dealer for Trail Bikes LLC (TBparts) since 2010. Disconnect the cable from the negative battery terminal. Install the bolts and washers, and torque the bolts to 18 foot-pounds. Remove the cam chain guide roller bolt and the chain guide roller. Step 4. Remove the airbox and the exhaust system, then disconnect the throttle cables, electrical connectors and hoses attached to the throttle body. → CHECK OUT our website : http://www.hardracing.com/13-14%20Bikes/14%20GROM.htmHonda Grom Big Bore Kit Installation.- Finbro 183cc BBKPART 1, Introduction to all the parts included in the Honda Grom Big Bore kitMonkey Father Big Bore KitGreat Low Prices→ Subscribe : http://www.youtube.com/user/HardRacingPerformanc?sub_confirmation=1→ Please take a second to leave a comment before you head off.→ Facebook: http://facebook.com/HardRacingLLC → Twitter: http://twitter.com/hardracing_com→ Instagram: http://www.instagram.com/hardracing.#HardRacing #GromBBK #GromBigBoreKit #GromTakegawaBBK #GromKitacoBBK #GromKosoBBK #GromTakegawaBigBoreKit #GromKitacoBigBoreKit #GromKosoBigBoreKit

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