EFFORTLESS RIDES TURN INTO ENDLESS DAYSSki-Doo's 2019 Summit SP makes it possible for a rider to ride longer, go further and push harder. It's ultra-responsive to rider input for effortless handling, and packs instant power delivery for conquering intimidating mountain terrain.Features may include: ROTAX 600R E-TEC ENGINE E-TEC SHOT ENGINE STARTER EASIEST STARTINGPush-button starting with almost no added weight. After an initial pull-start, the engine charges an ultracapacitor. Pushing the handlebar SHOT button for subsequent starts uses energy stored in the ultracapacitor to turn the magneto into an electric motor that rotates the flywheel, and with E-TEC technology, starts the engine. Eliminates nearly 20 lb. (9 kg) compared to conventional electric start. SHOT starting is only possible with Ski-Doo-exclusive E-TEC technology. REV Gen4 PLATFORM NEXT GENERATION OF A LEGENDKey to the Summit’s agility is the extreme mass centralization of the 4th generation REV platform. The trademark pyramidal frame, new die-cast aluminum front suspension module and new heat exchanger design ensure it’s strong, yet lightweight. PDRIVE CLUTCH QUICK, EFFICIENT, EASYA major factor in the quickness of REV sleds is the new pDrive clutch. Fast and friction-free dual rollers transfer torque in place of traditional sliding buttons on this 100% clutch. The oversize rollers with needle bearings, wide flyweights and shaft-on-shaft design emphasize smooth operation and long life. Ultra-responsive shifting, impressive RPM consistency and 2.8 lb./ 1.3 kg lighter than the TRA VII.