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146cc Big Bore Piston & Mikuni VM26 Kit - 14mm Piston Pin Engines
Part Number: TBW9070
141cc (57mm) Bore Kit and Mikuni VM26 Carb/Kit for Chinese 120cc Engines with Big Valve Cylinder Heads (27/23mm or 30/23mm):
- Aluminum cylinder with steel sleeve
- High compression large dome 57mm piston with rings, 14mm pin, & clips
- Head gasket kit
- Genuine Mikuni VM26mm 606 Series Performance Carb (Not a cheap Chinese copy)
- Intake Kit
- Jet kit with 3 different sizes (Stock size is a #190 - Extra jets sizes of 155, 165 & 175)
- Throttle Cable
- Dual Layered Foam Air Filter
This will make a very nice difference in performance over your stock setup. Additionally, it is a very quick and easy upgrade as it does not require case boring. We found the right level of compression for increased performance while also keeping reliability in mind. The kit includes a steel sleeved aluminum cylinder, light weight high revving piston and a head gasket kit. For additional performance, this kit includes the VM26 carb, intake kit, throttle cable, and air filter. The combination of the 141 bore kit and the proven VM26mm carb results in very impressive power and performance over your stock engine.
Important Note: This kit will only work on Chinese 120cc engines with a 52.4x55mm bore and stroke and a 14mm piston wrist pin. Common models are SDG/Sikk and RCM but there are so many Chinese brands/models that you absolutely need to know your bore and stroke and piston pin size. Many vendors also call 120cc engines "124" so its important you get the actual specifications from your engine vendor or measure yourself. Unfortunately, we are unable to tell you what you have based on a brand name as there are so many unknown Chinese brands. This kit is also recommended for use only with big valve heads such as the common Lifan head with 27/23mm valves or our Import Race Head with 30/23.5mm valves.
Installation Notes: Its very important that you use Hondabond (or similar quality) sealer on the head gasket. Also, don't use the original o-rings between the head and cylinder (not needed) but do use the large o-ring at the bottom of the cylinder between the cylinder and the engine case at the oil return.
Check out the rest of the parts in the Factory Motorsports Store. New items are being added daily.
International Shipping:
We use only USPS Priority and Express Service when shipping parcels to anywhere other than the USA. Items ship within 5 business days after order. International shipments normally go out Tuesday/Friday. To find out more about internation lead times please contact PRIOR to making your purchase.
Allow 4-17 business days for shipments to Alaska, Hawaii and International Orders
We are not responsible for carrier or customs delays.
Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as "gifts" - US and International government regulations prohibit such behavior. Please do not ask us to falsify shipping documents, it is a federal crime. Any item purchased from us is shipped as merchandise with a commercial invoice from eBay. The receiver of the parcel is fully responsible for any duties, taxes, or fees assessed by Customs and/or USPS as a result of importing the parcel into the country. Factory Motorsports Racing will not be responsible for import duties, taxes, or fees on any international shipments.
Refunds will not be given on refused/undeliverable international shipment for any reason. No exceptions!
Item Availability:
Items are listed when current stock is available, but we sell the same products in our store as our online store. If the item won is no longer in stock at our warehouse and is not available from the supplier direct, full refunds will be given. Buyers will be notified within 1-2 days after payment is received if an item is not in stock.
We make every attempt to keep only parts in stock listed but, that is sometimes a very time demanding task to keep updated here on eBay. If you want to check stock prior to bidding or placing an order feel free to message with your request and be sure to include part number and/or listing item# with description.
