The SB165 takes Yeti's forward bias posture and approach to geometry and unlocks new school advantages, tweaked to bring out the absolute best in 27.5 wheels. Yes, the steeper seat tube angle and shorter fork offset paired with Switch Infinity's pedalability offers a refreshingly easy climb. Yes, the slacker headtube angle, longer reach and lower bottom bracket are strikingly similar to that of a DH bike. Yes, the "little wheels" are capable of the hell you can handle.Made with the highest quality of carbon fibre available, Yeti bikes offer the perfect balance of stiffness an compliance.Through Timed Testing, Yeti Proved The Resulting Ride Characteristic Helped Racers Carry Higher Downhill Race Speeds.THE 2021 YETI SB165 FEATURES:Chainguide Ready: Out of the box. standard equipment on all SB165 builds.FORWARD BIAS POSTURE: Giving racers the room they need, and centres them on the bike.20mm Longer Travel Fork: Pairs well with the forward-biased frame, matching the vertical wheel travel of the rear suspension.Slacker Headtube: Lower bottom bracket and longer wheelbase increasing stability and handling.Tested to DH Standards: High Impact strength, carbon lay-up tuned to go fast and tested to DH standards.ANTI SQUATAcross the line, Yeti have chosen a relatively flat and high anti squat curve in the beginning and mid-section of travel where pedalling commonly occurs , aka the pedalling zone.This creates an efficent pedalling platform through your entire pedalling zone, as opposed to one single point. After the pedalling zone there is an inflection point where the switch infinity link moves down, dropping the anti-squat drastically.Riders are typically not pedalling in this zone, so chain forces have less of an effect on the suspension performance. Decoupling of the chain forces allows the suspension to work more efficently to absorb impacts making the feel of a yeti distinct.TRAVEL165MMWHEEL SIZE27.5”FRAME SIZES AVAILABLESM / MD / LG / XLREAR SHOCK230MM X 65MMBOTTOM BRACKETPRESS FIT PF92REAR WHEEL148MM X 12MM BOOSTSEATPOST DIAMETER31.6MMREAR DERAILLEURN/AWARRANTYLIFETIME WARRANTY"