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GPR Exhaust System Suzuki Dr 600 - S - R 1985/90 Homologated slip-on exhaust Trioval Piaggio - X-Evo 250 i.e. 2007/11 (2007-2011) GPR Exhaust System Honda CbrGPR Exhaust System Suzuki Dr 600 S R 1985 90 Homologated slip on exhaust Trioval Homologated slip on exhaust For installation, no structural modifications to the motorcycle are required for use of the product in an approved version. It is recommended to read the instructions in the package or the tutorials visible on www. gpr. it and on youtube. For on line purchases it is necessary to activate the warranty by sending the special coupon stamped by the