It does not include the cost of any parts needed or used in this process. The parts used in rebuilding your engine can be genuine YAMAHA or aftermarket as specified by you. I have owned and run my own NSR250 MC21 since 2001 as well as rebuilding and restoring countless other RD's NSR's, TZR's, RGV'S and KR1's. The time taken will depend upon what parts or additional services are needed.
But if no additional work crank rebuilds, barrel re-plating, etc.. is required then 14 days is the usuall turnaround time. The item "RD350 350LC YPVS engine rebuild and refurbishment service" is in sale since Wednesday, October 11, 2017. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Other Motorcycle Parts". The seller is "fordp2005" and is located in Tring.This item can be shipped to United Kingdom.