NEW Michelin Starcross HP4 90/100-21 Front Dirt MX Tire for $39.99 (lowest price by $40) plus free shipping & no sales tax (excluding MA). 14 day money back guarantee. The wide front HP4 tire provides a larger contact patch that enhances predictability in blue groove conditions. The taller, wider front casing also provides greater air volume for soaking up hard landings and big jumps.