Complete Big Bore Kit Grom 170cc 14-21 4 Valve Head 34mm Throttle KOSO #T282

Description: This listing is for one COMPLETE 170cc Big Bore kit from KOSO for the 2014-2021 Grom 125 and, partially for the Monkey 125. Unlike other sellers, we have compiled all of the necessary components into one package available for your purchase to pump up your Grom.The EXV4 4 Valve Head features the obvious upgrade of 4 valves, but also includes a ported oval intake for faster air flow, and a turbulent combustion chamber & piston head for a better air/fuel mixture. Additionally the rocker arm has an upgraded design for less friction loss as well as a longer life span. Valves and Cam are already factory installed! We also throw in the recommended upgraded ER9EH spark plug.The ready to install 170cc Cylinder/Piston set requires more air/fuel as well as better oil flow. Coming prepared, our package includes the 34mm throttle body, high flow fuel injector & adapter kit, large air box intake duct, airbox to large throttle body adapter boot AND the high flow oil pump.Note that this kit is able to be installed on the 2018-2021 Z125 Monkey. However, the airbox is different and will require you to customize/remove the airbox and purchase a 48mm Pod Style filter (not included).Not included, but also required for proper runnability are the following three things. An upgraded exhaust system, an upgraded air filter, and a fuel management system. There are a few different brands out there for you to choose from if you do not already have these things installed.This complete kit is designed to give you longevity with your upgrade. However, Installation/tuning mistakes WILL lead to a blown motor. We do not accept any liability and highly recommend having all work performed by your local professionals. This item is new in the package, in stock, and ready to ship. Our stock photos of an actual item are shown. To check our stock of the ****, Click Here --> To check our stock of other parts and accessories Click Here FITS YEAR/MAKE/MODEL: 2014-2021 GROM1252018-2021 Z125 MONKEY (AIR INTAKE N/A, REQUIRES CUSTOMIZATION) Please Read The Following Before Questions, Bidding, and Buying Shop Hours: Tuesday-Saturday 10-5 Pacific Time SHIPPING TIMES: INTERNATIONAL SHIPPING First Class International No Real Time Tracking 2-10 Weeks* Canada and Australia Averages 2 to 4 Weeks Western Europe and the UK Averages 3 to 7 Weeks Most Countries Averages 6 to 10 Weeks Priority Flat Rate Okay Tracking 2 to 6 Weeks* Priority Mail International Good Tracking 2 to 4 Weeks* Priority Express International Good Tracking 1 to 2 Weeks* USPS Global Express Good Tracking (Expensive) 3 to 7 Weeks* * CUSTOMS CLEARANCE TIME varies country to country and may delay delivery. USA DOMESTIC SHIPPING USPS Parcel Select Ground No Real Time Tracking 1-2 Weeks USPS Media Mail No Real Time Tracking 1-2 Weeks UPS Ground ** Good Tracking 3-9 Buisness Days USPS First Class Mail Limited Tracking 2-6 Buisness Days USPS Priority Mail Good Tracking 2-4 Buisness Days USPS Express Mail Good Tracking 1-2 Buisness Days UPS Next Day Air Saver ** Good Tracking 1 Buisness Day * We ship up to Noon PST Tues-Sat from 98204. ** Please Note that Express Mail USA is a 1-2 business day service. If you need a more reliable next day service, please choose or request a quote for UPS Next day Air. UPS does not pick up on Saturday and if you need Saturday Delivery for next day air, contact us so we may adjust the item for the Saturday Delivery Surcharge. INTERNATIONAL GUIDELINES WE DO NOT MARK ITEMS BELOW ACTUAL PRICE OR AS GIFTS on customs documents. Asking us to do this will only delay your shipment. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility WHEN THE ITEM ARRIVES. Please do not confuse these as additional charges from us. Check with your country's customs office to determine what these additional costs (if any) will be prior to buying. **Unless your item is being shipped using the eBay Global Shipping Program, wherein eBay will collect your taxes upon checkout** Listed items are for vehicles originally SOLD IN THE USA and may or may not be correct for vehicles sold in other countries. Also, colors may be different in other countries so please verify your color, size dimensions, and part number before purchase. We commonly ship internationally using the eBay Global Shipping Program. If you are not sure whether eBay ships to your country, please check the following web page. https://www.ebay.com/help/selling/shipping-items/setting-shipping-options/global-shipping-program?id=4646 Items shipped this way are sent to an International Shipping Warehouse in Kentucky. You will receive a notification that it was delivered, meaning it has been delivered to Kentucky for customs processing. A new tracking number will shortly be procured to go straight to your country. You will be able to access the new tracking number through your purchase history on eBay. eBay has not yet successfully set up combined shipping for every country that they ship to. We are not provided with a list of countries where we can combine shipping and where we cannot. You will have to try to add all of your desired items to your cart before purchasing to determine if it will allow you to purchase them together or not. eBay takes responsibility for the international side of the shipment which includes collecting your import duties at the time of payment. We do not have any involvement in this and could not legally get around your country’s import duties if we did. Any questions about missing/damaged items or import charges for items purchased the eBay Global Shipping Program must be directed directly towards eBay. We as the seller do not handle these matters as eBay accepts liability for redirecting and delivering your package to you. SHIPPING COSTS You can find all shipping costs and options available for an item in the Shipping and Payment tab below the main picture in this listing. If you wish to combine shipping, click the Add To Cart button on the items you want and click the request total tab and we will send you an invoice with combine shipping. CONTACT Please use the ASK SELLER A QUESTION tab below. Browse through our questions and answers page within that tab for quick answers to many of the questions you may have. If you need to be contacted by phone, please leave your name, phone number, and the best time to call in a message through eBay's Ask Seller a Question tab. RETURNS Please click the Shipping and Payment tab below the main picture in this listing to view our return policy CALIFORNIA PROPOSITION 65 WARNING! Cancer and Reproductive Harm - For more information, please visit www.P65Warnings.ca.gov South Dakota v. Wayfair, Inc. Disclaimer On June 21st, 2018, the US Supreme Court issued its decision in the South Dakota v. Wayfair case. That case determined that states can require collecting sales tax from sellers outside their state. In some cases, eBay will collect sales tax on items purchased on eBay. In other cases, we as a seller will collect the sales tax to remit to the buyer’s home sta

Price: 1599.98 USD

Location: Everett, Washington

End Time: 2025-01-10T20:44:26.000Z

Shipping Cost: N/A USD

Product Images

Item Specifics

Restocking Fee: No

Return shipping will be paid by: Buyer

Returns Accepted: Returns Accepted

Item must be returned within: 30 Days

Refund will be given as: Money Back

Brand: KOSO

Type: Engine Rebuild Kit

Items Included: Camshaft, Camshaft Bearings, Cylinder Barrel, Exhaust Valves, Gasket Set, Intake Valves, Oil Pump, Piston Rings, Pistons, Valve Springs, Wrist Pins, Throttle Body, Air Intake, Intake Boot, Injector

Manufacturer Part Number: 27-5810, 27-5811, 27-5805, 27-5813, 27-5812, 2-ER9EH, 27-5807, 27-5808

OE/OEM Part Number: MC623000, MB623004, 5869/10, DY623013, NF623000, DM623K10, DM623000, DB623000, DB008160

Country/Region of Manufacture: Taiwan

Part Brand: KOSO