If you want to purchase a Rivian R1T Truck or R1S SUV, there is currently only one powertrain available: a quad-motor setup with 835 horsepower. The company is working on a dual-motor setup that will arrive next year, and it just shared some new details about it.

"When our Dual-Motor AWD system is introduced for R1T and R1S next year, you'll be able to choose a standard version capable of 600 hp and 0-60 mph in 4.5 seconds, or an enhanced version that increases horsepower to approximately 700 hp and 0-60 mph in 3.5 seconds," Rivian said in a Tweet. For comparison, the quad-motor version takes around three seconds to hit 60 mph.

Further details posted on the Rivian website confirm that both dual-motor variants will come with an 11,000-pound tow rating. Buyers will be able to choose a standard battery pack that enables a 260-plus-mile driving range or a larger pack that currently delivers 328 miles of EPA range on the quad-motor setup. With two fewer motors, it's possible that the dual-motor with the large pack will travel even further on a charge.

Rivian is also working on a larger max battery pack for the R1T that will offer over 400 miles of range, but it's been delayed until at least 2024. Since the R1S is shorter, it can not accommodate the max pack. According to an email sent to reservation holders, Rivian will no longer let customers pair the max battery with the quad-motor setup.

Pricing for the dual-motor setup will start at $67,500 for the R1T and $72,500 for the R1S, though some early reservation holders are locked at a lower price. Buyers could previously purchase the quad-motor versions at these amounts, but Rivian was forced to hike prices due to material cost increases.

Rivian hasn't specified exactly when the dual-motor variants arrive, so reservation holders should continue to check their email for updates.