With longer, slacker modern geometry & more travel the revamped Oiz is a more capable mountain bike than ever before. Plus, the Two-Stroke concept allows the same light carbon frame to build into either a 100mm XC race bike or a 120mm TR trail slayer.
Back in midsummer Orbea debuted the all-new version of their full suspension Oiz cross-country bike, with talk of two stroke. Now they show us what Two Stroke actually looks like, and how it jumps from race track to singletrack.
2019 Orbea Oiz OMR carbon short travel mountain bike
Orbea says the two stroke idea delivers two different bikes with the same frame. Two stroke is really pretty self-explanatory. The XC bikes gets a rear shock with shorter stroke to deliver 100mm of rear wheel travel matched to a 100mm fork, and the TR bike uses a longer stroke shock to get 120mm of rear wheel travel and a matching 120mm fork.
The frame stays the same, but the build gets either XC cross-country or TR trail leanings to match.
Orbea Oiz XC 100mm carbon cross-country bike
We hit the details of the XC iteration back in June, built for tougher modern World Cup XC courses the new Oiz is all around longer, slacker and at 100mm of travel more capable than the previous generation of XC bikes.
The XC iteration is still a 29er race bike though – skinnier tires, tougher gearing and steeper geo. Its World Cup race geometry gets the racer climbing on the rivet with a 75° seat angle, and the 69° head angle that Orbea says is the most slack they’ve put in a cross-country bike.
Orbea Oiz TR 120mm carbon trail mountain bike
The TR version of course gets longer travel and slacker geometry, but also comes with a dropper seatpost to get your weight further back.
It also features more aggressive treads with at least a jump up to a bigger 2.35″ tire up front. There’s likely a bit more room for a slightly larger tire out back, but this isn’t an all-mountain bike.
Orbea Oiz XC 100mm vs. TR 120mm Geometry
Picking the longer TR geometry slackens the headtube out by a degree and lengthening trail a bit as well with the both travel forks getting the same offset. The longer TR build also slackens the seat angle by a degree, shaves 7mm off of bottom bracket drop, and ends up adding a bit to overall wheelbase. At the same time keeping chainstay/rear center the same, the TR build lifts the front end up & back a bit both shortening reach & increasing stack.
Oiz XC & TR Availability & Pricing
The Oiz carbon is available in every spec level and through the full MyO customizer with either 100mm XC or 120mm TR builds, and also in the single smaller frame that opts for 27.5″ wheels. Picking the longer TR suspension setup adds $169 / 129€ to whatever build you already have chosen and $78 / 59€ for the dropper upgrade, while the meatier tires are a free upgrade. Complete XC bike pricing starts at $5000 / 4600€ up to $8300 / 7500€ for the LTD build, but pretty much knows no upper limit.