New Emissions Parts
Forced to utilize new leak-proof flex couplings, the OE's have had to design newer flex sections that could take the heat and movement that 2007 and newer emissions commercial trucks experience every mile driven. Widely used for these applications has been exhaust bellows - an accordion-bent solid stainless pipe section that can tolerate limited movement, for a limited period of time. The theory is that bellows is 100% leak-proof, which it is - until it splits open! Bellows cannot move torsionally, but our flex replacements CAN! Ours also surpass the leak requirements set forth. The new GRAND ROCK Emissions flex sections can take the heat, the punishment, and the movement, and at significant cost savings!