Backfire 105mm PU wheels are great opiton for users who like PU wheels but want a bigger size than the stock 96mm ones.  They are equipmented with Backfire stock 37T pulleys and 260mm Belts. 

• More Shock Absorption
• Comfortable Riding on City Road
• Compatible models : Backfire Zealot, Zealot S, Zealot S3, Zealot S2,  Zealot S2e, Zealot X, Zealot V and G2z.   They also fit Zealot X2 (using defualt gear pulleys, not using the belts or belt pulleys).
• Motor Covers are required to be adjusted or removed to use bigger 105mm wheels on certain models. Reach out tech support for more details if any questions.