Stans no tubes rapid mtb rimstans no tubes rapid mtb rim is a robust durable and lightweight rim to kick start a new race ready wheel build ideal for aggressive riding on all mountain freeride and downhill trails this rapid mtb rim weighs an impressive 455 grams and is designed to cope with heavy impact on violent terrain this aluminium alloy rim can take more punishment than youll want to dish out with an external rim width of 25mm this rapid mtb rim offers a solid base for nimble