What is the replacement part for the discontinued 2-7/8 chain tensioner with the smaller roller for the MB 165. Does the 2-5/8 with the larger roller work? Would appreciate any input. Thanks
It's possible that you may be able to directly swap the discontinued 2-7/8" chain tensioner for the newer 2-5/8" one, though we haven't confirmed that. Alternatively, you could replace the entire jackshaft assembly with the Gen 2 version - the replacement jackshaft assembly will include the new 2-5/8 chain tensioner + a new steel cover and would retrofit the MB165. The jackshaft assembly with steel cover can be found here: https://www.monsterscooterparts.com/brands/baja-motorsports/models/mini-bike-mb165-mb200/bajamb165jackshaft.html