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Description
The Twister Throttle Tube from ProTaper is constructed from quality anodized billet aluminum. The sealed radial ball bearing and polymer bushing allow for a consistent and smooth throttle operation while a knurled grip mounting area ensures a vice-like grip bond. The ProTaper Twister Throttle tubes are used by top-level pro teams and riders world wide. Twister Throttle Tubes are compatible with all ProTaper handlebars and Renthal 7/8 in. handlebars with the standard bearing insert.
FEATURES
- Features a sealed ball bearing that virtually eliminates friction and nylon sleeve bearing on the inboard end
- Crud plug stops grip glue form ruining bearing
- All Twister throttle tubes include a free insert for all ProTaper® bars
Technical Specifications
- MFG. Part Number 025073
Vehicle Information
Yamaha YZ426F Dirt Bike (2000-2002)
The Yamaha YZ426F, produced from 2000 to 2002, was a highly regarded motocross motorcycle known for its powerful 426cc single-cylinder, four-stroke engine. Featuring a DOHC 5-valve design, water-cooling, and a kick starter, it quickly became a dominant force on the track. Throughout its production, the YZ426F was generally offered as a single model, without distinct trim levels, but received significant annual updates. The YZ426F underwent notable evolution each year. The 2000 model saw an increased displacement to 426cc (from the YZ400F), a new heavy-duty clutch, larger radiators, and an improved chassis with an aluminum subframe. For 2001, a major upgrade was the introduction of lighter titanium valves, alongside a redesigned exhaust, refined carburetor settings, and updates to the front brake and suspension. The 2002 model, while anticipating a new generation, received minor but impactful updates, including a new, lighter swingarm, revised shock linkage, and updated ignition mapping. These continuous improvements ensured its competitive edge. Q: Is this product compatible with my Yamaha YZ426F?
A: To ensure perfect compatibility, please use the year and edition selector at the top of the page.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | 10 h (aggressive riding) or 15 h (recreational riding) for 2000-2001. Similar intervals are expected for 2002. | |
| Air Filter | 5 h (aggressive riding) or 10 h (recreational riding) | |
| Spark Plug | Periodic inspection and replacement as needed | |
| Coolant | Check level before each ride. Replace annually or every two years. | |
| Valve Inspections | 15 h (aggressive riding) or 30 h (recreational riding) for 2000. 20 h (aggressive riding) or 30 h (recreational riding) for 2001. Intervals not specified for 2002. | |
| Top-End Inspections (piston, rings, cylinder) | 30 h (aggressive riding) or 50 h (recreational riding) for 2000 and 2002. 40 h (aggressive riding) or 60 h (recreational riding) for 2001. | |
| Bottom-End Inspections (crankshaft, bearings) | 50 h (aggressive riding) or 100 h (recreational riding) for 2000 and 2002. |