Join Date: Jun 2011
Location: Sunnyvale, California
Bikes: Bridgestone RB-1, 600, T700, MB-6 w/ Dirt Drops, MB-Zip, Bianchi Limited, Nashbar Hounder
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
By around 1998, most MTBs were 135mm spacing in the rear, where your main concern will be. It's fairly easy to check. Pop the QR on the rear wheel, measure the dropouts with a metric ruler with mm, and then measure the new frame. Some new frames even sport 140mm. Go figure. The primary issues beyond the axle spacing, might be if the new frame uses disc brakes but the older rockhopper wheels are using cantilever/V-brakes, and if you do need to get new axles, they aren't expensive, but you can order new axles and add a spacer to the non-drive side, but you'll need to re-dish the wheel. Don't forget new cables and housing might be needed if cable routing is different (and longer on the new frame).