Heavy duty replacement slide rails for your Gen 4 Chassis Ski-Doo Summit These are designed to fit your Freeride, Expert Package, X, Edge and SP models. Cut from 7000 series aluminum on our proprietary Lightweight extrusion allowing for maximum strength and minimal weight. Kits come with 2 rails, 2 hyfax, fasteners and instructions. **Rails are pre-drilled to accept our ULTRALIGHT rail braces for g4/g5. These go under the rear bump stops and bridge the low center section of the rail required by the summit's suspension design. This allows you to maintain maximum rail strength on big impacts without sacrificing skid travel by increasing rail height. ULTRALIGHT rail braces are highly recommended for Summit riders who like to hit jumps and drops, or are on stock suspension. CLICK HERE TO VIEW. ** Our 174 rails are designed to stretch the 154/165 skid out to 174/175" tracks. The factory 175 has different shock mountain and is a different rail. For factory 175, order the 175 length rails, to stretch get the 174. To stretch a factory 146" length G4 Summit, you will need to use XM Summit rails due to different tensioner design on the 146. Please remember to leave us a note at checkout so we can include G4 146" stretch to 154" or longer hardware on that page saying "I am stretching a g4 146" or similar. DURING INSTALL IT IS IMPORTANT TO FILE/GRIND THE TRANSITION OF THE HYFAX/SLIDES TO THE RAIL TIPS TO ENSURE THERE IS NOT A LIP ON THE FRONT EDGE OF THE HYFAX FOR TRACK CLIPS TO CATCH PLEASE AVOID POWDERCOATING OR OTHER COATINGS THAT REQUIRE A BAKE PROCESS - THIS REMOVES THE TEMPER FROM OUR RAILS, WEAKENING THEM SIGNIFICANTLY AND VOIDING ALL WARRANTIES Rails of length 154-175" use a 1/2" tall axle slot, same as the factory rails for those lengths. Our 1/2 inch slot straight axle and 8 to 9" 1/2" slot offset axle are compatible with these lengths. Rails of the 146" length use a 1" tall axle slot, and may be labeled "XM Summit Rails" in some cases, as the XM summit and g4 summit 146 share a rail design. Our 1" slot straight axle and 8 to 9" 1" slot offset axle are compatible with this length. When stretching a factory 146 gen 4 summit to 154, you will need 154+ gen4 OE tensioner assemblies, including BRP part # 503194266. (sold individually)
