Frisco E-Bike
Mechanic handling a bicycle frame

Representative photo. Product photos and current options are on the Amazon listing.

Spokes & Nipples · Park Tool

Park Tool SW-7.2 Triple Spoke Wrench

A spoke wrench is the one tool that makes the difference between a wobbly wheel you ride around on and one you fix in the garage. Park Tool's SW-7.2 covers three common nipple sizes in a single hardened tool, which matters on e-bikes because hub-motor wheels often use larger nipples than the rest of the bike. It is not a precision truing stand, but combined with a zip tie on the fork as a gauge, it will get a rubbing wheel straight again. The three-in-one format is the right one to own if you only own one.

Truing a rubbing wheel at homeTightening loose spokes on a new hub-motor wheelRiders who want one wrench for several bikes

Current price and availability are shown on Amazon.

Affiliate Disclosure: We may earn a commission when you purchase through links on this page, at no additional cost to you. Details

We link to Amazon search results for this model so you always see the current listing and variants. Amazon is the seller; we are not.

Key considerations

  • Check that one of the three sizes matches your nipples; some hub motors use unusual sizes
  • Turn in small increments and check often
  • Does not replace a shop truing for badly bent rims
  • Pair with a bit of oil on the nipples before adjusting old wheels

Pros

  • Three sizes in one
  • Durable Park Tool quality
  • Inexpensive

Considerations

  • Less comfortable than single-size wrenches for long jobs
  • May not fit every oversized motor nipple

Compare

Similar alternatives

All spokes & nipples
Bike maintenance in a workshop
Spokes & Nipples

13 Gauge Stainless Spokes with Nipples for Hub Motors, 36 Pack (generic)

Hub-motor wheels are laced with short, thick spokes — 13 gauge (2.3 mm) is the usual — because the big flange sits close to the rim and the wheel carries far more load than a normal bike wheel. When a spoke snaps, ordinary 14 gauge spokes from a bike shop are the wrong diameter for the motor flange holes and nipples. Generic 13g spoke packs come in several lengths; measuring an existing spoke from elbow to end is the only reliable way to order. A pack of 36 lets you replace one or re-lace the whole wheel.

Best for: Replacing broken spokes on a rear or front hub-motor wheel · Re-lacing a hub motor into a new rim · Keeping spares for a heavy e-bike

Mechanic handling a bicycle frame
Wheels & Rims

20-Inch Fat Bike Front Wheel, 80 mm Rim, Disc (generic)

The front wheel on a fat folding e-bike is a plain bicycle wheel: no motor, a 6-bolt disc hub, and an 80 mm wide rim for a 4-inch tire. When one gets tacoed by a pothole, a generic replacement is the cheapest fix, and several sellers list 20-inch fat front wheels with an alloy double-wall rim and a quick-release or bolt-on hub. Check your fork's dropout spacing (100 mm and 135 mm both exist on these bikes) and hub type before ordering. Tire, tube and rotor are usually not included.

Best for: Replacing a bent front wheel on a 20x4 fat folder · Riders who want a spare front wheel for a second tire setup · Budget repairs

Affiliate Disclosure: We may earn a commission when you purchase through links on this page, at no additional cost to you. Details