Have you tried one of these Suspension stems from Aliexpress? They are similar to the Redshift ones that cost most than three times as much. : r/xbiking
260mm 270mm 280mm 10" Shock Absorber Rear Suspension For Motorcycle Dirt Pocket Bike Quad - Falling Protection - AliExpress
Fox Mountain Bike Shocks | Bicycle Fox Shocks | Fox Bicycle Suspension - Aod02 - Aliexpress
200mm 7.9in Motorcycle Scooter Atv Black Rear Shock Absorber Suspension Damper Adjustable Spring Pressure Universal - Motorcycle Shock Absorber & Parts - AliExpress
Original VSETT Front Suspension for VSETT 10+ Electric Scooter Adjustable Coil Spring & Hydraulic Hybrid Shock Absorber 127mm - AliExpress
Front+rear Air Suspension Shock Absorber For Toyota Land Cruiser Prado 120 For Lexus Gx470 Airmatic Struts 4853069485 4851060121 - Shock Absorber & Struts - AliExpress
Budget aliexpress, BBSHD full suspension build. : r/ebikes
Trigo Bicycle Rear Suspension For Brompton 3sixty Pikes Folding Bike Spring Shock Absorber - Bicycle Rear Shocks - AliExpress
Re-designed Aliexpress Skateboard Suspension Truck Plates - ESK8 Mechanics - Electric Skateboard Builders Forum | Learn How to Build your own E-board
205mm Motorcycle Rear Shock Absorber Suspension 1200 Ibs For Yamaha Lc135 Jym200 250 Atv Scooter Dirt Bikes Electric Bike - Falling Protection - AliExpress