Which is better for a heavy rider or cargo?

The TST R002. It is rated for 450 lb, against 330 lb for the Saturn, and its 1500W motor has more rated power for hills and loads.

Which has the longer range?

The Saturn's 956.8Wh battery is larger than the TST's 48V 15Ah or 25Ah packs. Heybike quotes up to 50 miles with pedal assist; TST quotes 65 to 100 miles, so real-world range depends on assist level and load.

Is the Saturn worth the extra money?

Only if you need the bigger battery, IPX6 electrics or the 40 mph unlocked speed. Otherwise the TST R002 costs less and carries more weight.

The TST R002 tops out at 32 mph stock. The Saturn is a Class 3 bike limited to 28 mph, with an unlocked 40 mph mode.

Which is easier to live with day to day?

The TST R002 is lighter and cheaper to buy. The Saturn's removable 956.8Wh battery and IPX6 rating make charging and wet-weather riding easier.

Do both have full suspension and hydraulic brakes?

Yes. Both use 20x4 fat tires, full suspension and hydraulic disc brakes. The Saturn states 140 mm front travel; the TST lists 180mm rotors.

TST R002 20'' 1500W Full Suspension Moped-style Electric Bike vs Heybike Saturn

Buy the TST R002 if you want more power, more payload and a lower price. It is $699.99 at Amazon as of November 5, 2026, against $890.19 at Walmart for the Heybike Saturn. The Saturn has a bigger battery and a higher unlocked top speed, but it weighs 115 lb and carries only 330 lb.

Today the TST R002 20'' 1500W Full Suspension Moped-style Electric Bike costs $190.20 less at its best price.

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