Bafang · DIY build
The classic DIY e-bike conversion. You fit a Bafang mid-drive to a regular bike frame, and a huge ecosystem of chainrings, batteries, displays and controllers has grown around it.
About the bike
Bafang's BBS02 and BBSHD kits turn a regular bicycle into a mid-drive e-bike. The motor drives through the bike's own gears.
Who it's for
DIY builders converting a favorite frame, and hill climbers who want gear-driven torque.
The mod scene
This is the DIY corner: chainrings, gear sensors, displays and controller programming. Programming changes can affect legal class and warranty.
Specs depend on the kit and the bike you fit it to, so check Bafang's documentation for your exact kit.
Source: bafang-e.com. Manufacturer claims, checked October 2026; specs can change by model year. No prices listed.
Owner communities
Ride smart
Confirm fit for your model year. Raising controller speed or current limits can void your warranty and make the bike illegal in bike lanes.
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Lumos
Adult rider helmet with built-in front and rear lights and rear turn signals from the included wireless remote. CPSC-certified, recharges via USB-C,…
Check the size guide (S, M-L, XL) before ordering. Automatic brake lights need the separately sold Lumos Remote.
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Hornit
A very loud 140 dB bike horn with a second, quieter mode and a remote trigger button for the handlebar. It runs on AAA batteries.
It is extremely loud, so use it only when needed.
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Garmin
A rear radar and tail light that warns of vehicles approaching from behind. Alerts show on Garmin bike computers or the Varia phone app.
Alerts need a compatible Garmin device or the Varia app on your phone.
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Lectric
OfficialAn official Lectric pair of adjustable handlebar mirrors with mounting hardware. Lectric lists them for all Lectric models and most standard bikes and…
Check that the clamp fits your handlebar before ordering if you ride a non-Lectric bike.
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Kohlburg
Sold Secure Diamond U-lock with a 14mm hardened-steel shackle, a multi-disc cylinder, a frame bracket and a 67" steel cable. E-bikes are prime theft…
The lock weighs about 3.3 lb. The bracket fits only round frame tubes 25–38mm. Remove your battery and display when parking.
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Wsdcam
A vibration-triggered 113dB siren that mounts with cable ties or adhesive and works on any e-bike. Pair it with a real lock, because an alarm alone…
Disarm it before you move the bike. It runs on AAA batteries, so replace them when it gives the low-battery beep.
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Life360
A small Bluetooth tracker you can hide on any e-bike to help find it if it is stolen. Life360 lists IP68 water resistance, about 350 ft of range, a…
Bluetooth only, not GPS. A stolen bike shows up only when a phone running Tile or Life360 passes nearby. The battery cannot be replaced, and some features need a paid Life360 plan.
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Apple
Apple's second-generation Find My tracker in a 4-pack. Apple says it has a louder speaker, a longer Precision Finding range, and a replaceable battery…
Needs an iPhone or iPad. AirTags warn nearby phones they are travelling with an unknown tracker, so a thief may find it. Holders and bike mounts are sold separately.
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Crankbrothers
A 19-function multitool with hex keys 2–8mm, Torx T25, screwdrivers, 8/10mm open wrenches, spoke wrenches and a chain tool for 8–12 speed chains. It…
Some e-bike axle nuts (often 15–18mm) need a bigger wrench than this tool has.
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Topeak
A compact chain breaker for single-speed through 13-speed chains. It has a hook that holds the chain ends while you join them, plus 4mm and 5mm hex…
This is a dedicated chain tool, not a full multitool. Pair it with a multitool for other bolts.
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Accu-Gage
A dial gauge with an 11-inch flexible hose, a bleed button and a needle that holds its reading. The 0–60 PSI range suits fat and cargo e-bike tires.
The chuck is for Schrader (car-type) valves. Presta valves need an adapter.
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Lectric
OfficialAn official Lectric 210D polyester cover (78 × 43 × 27.5 in) with lock eyelets, three bottom buckle straps and a compact carry bag. Lectric lists it…
For long-term outdoor storage, take the battery out and keep it at room temperature.
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Ergon
Winged ergonomic grips spread pressure across your palm to cut numb hands and wrist strain on long rides. They use a lock-on clamp.
This listing is the Small size. Make sure your throttle, shifter and brake levers leave room for full-length grips. Twist-shift bikes need the GripShift version.
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REDSHIFT
A linkage suspension seatpost with 35mm of travel and adjustable preload. It keeps your saddle angle steady over bumps. It comes in 27.2, 30.4, 30.9…
Check your seatpost diameter and pick the matching size on Amazon.
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Cane Creek
A short-travel parallelogram suspension seatpost with 50mm of travel. You can swap the elastomers to tune it for your weight.
This listing is 27.2mm. Check your bike's seatpost size (shims are available) and the rider weight limit (about 250 lb / 115 kg).
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Quad Lock
A damping module that sits between a Quad Lock mount and the phone head. It cuts high-frequency vibration that can damage phone cameras on fast or…
This is the dampener only. You also need a Quad Lock handlebar or stem mount and a Quad Lock case or adapter.
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Rokform
An aircraft-grade aluminum handlebar phone mount that installs with one screw and fits handlebars from 22.2 to 35mm. It uses Rokform's twist-lock…
Needs a Rokform twist-lock case or the Rokform universal adapter.
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BiKase
A machined-aluminum handlebar clamp that grips phones from 4.7 to 6.8 inches, cases included, with a cam-lock switch and silicone pads. It turns…
Phones larger than 6.8 inches may not fit. Lock the blue cam switch before riding.
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Lectric
OfficialLectric's official handlebar phone mount with a lock switch and a 360° ball joint. It fits phones up to 4.7 in wide and 6.8 in tall. Lectric lists it…
Check that your phone, in its case, is no more than 4.7 in wide.
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Part types owners commonly fit. Specific product picks are coming soon.
Electrical