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The negative spring deflections are slightly too low in the stock configuration
Originally developed as a special solution for BMW four-valve Telelever models
the seat height remains unchanged compared to the original chassis
The stock suspension also lacks sufficient negative spring travel
Zero Friction progressive springs
Streetbox Front Suspension The negative spring deflections areThe Hyperpro Streetbox includes a progressive front fork spring kit and an adjustable emulsion shock. This comprehensive solution improves cornering, braking, and overall bike balance, making it ideal for street use.
