Description
If there's one thing Tom knows, it's dirt. When he first designed theUltra, he knew it would appeal to riders who demanded specific riding characteristics and handling on dirt that only it could offer - and that was in the 1980s! Good design stands the test of time, and the latest iteration of theUltra is an excellent example. Like its predecessor 30 years earlier, the new Ultra occupies a unique riding space for cross-country riders looking to make noise and have fun, as well as forenduro riders looking for all-mountain shredding.
Designed around a 120mm travel fork and super-stable Boost 148 spacing, most of the fun is in the wheels. Designed to accommodate 29" or 27.5" wheels, theUltra is very versatile. Slip on 29" wheels for XC trail riding, or 27.5" wheels for no-holds-barred shredding. TheUltra is a tough, rugged trail master that doesn't know when to stop.
- Compatible with 27.5 x 2.8 and 29 x 2.4 tires
- Internal passage for a down tube
- Boost rear spacing 148x12
Material: Ritchey Logic heat-treated steel tube, triple-butted - TIG welded
Forged and machined tapered head tube ultra-lightweight
Headset: Integrated - 1.5" tapered (upper IS42/28.6 | lower IS52/40)
Upper Headset Bearing: 41.8mm OD / IS42/28.6 (S.H.I.S.)
Lower Headset Bearing: 51.9mm OD / IS52/40 (S.H.I.S.)
Seat tube clamp size: 33.1mm (2.5Nm max for derailleur clamps and chain guides)
30.9mm seat tube with routing dropper stealth and replaceable seat clamp
Bottom bracket: 73mm - English thread
BOOST cranks must be used for a 52mm chain line.
Maximum crank size: 38T single - 26/36T double
Designed for 1X or 2X chainrings (Side Swing front derailleur required for double)
Recommended tire size: 27.5x2.4 (2.8 max) or 29x2.25 (2.4 max) - tire size varies by rim and tire manufacturer
Rear brake: 160mm (180mm max - adapters available separately)
Sizes: S (15") / M (17") / L (19") / XL (20.5")
Weight: 2.57kg (L/19")
Color: Alpine Blue or Sierra Slate Black
BOOST axle spacing 148mm (12mm alloy thru axle included)
Optimized for a 120mm suspension fork (BOOST) or a 500mm rigid fork with axle crown
External cable management
Replaceable stainless steel derailleur hanger
