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ThinkRider PP5 Spider Power Meter & 4 Bolt Aluminum Crankset. 110 BCD, BLE & ANT+, Lightweight for Road Bikes, 160-172.5mm $119
$119
$159
25% off
Amazon
AmazonDeal Details
ThinkRider via Amazon [amazon.com] has ThinkRider PP5 Spider Power Meter & 4 Bolt LIghtweight Aluminum Crankset. 110 BCD, BLE & ANT+, for Road Bikes, 160-172.5mm, $119 + Free Shipping.
Key Features:
Key Features:
- Accuracy: ±1% real-time power & cadence tracking
- Material: 7075 aviation-grade aluminum, ~20oz total weight
- Battery: 300h runtime, magnetic snap charging
- Connectivity: ANT+ & Bluetooth, works with Garmin/Wahoo/Zwift
- Durability: IPX7 waterproof, all-weather riding
- BCD: 110mm, 4-bolt spider
- Length: 160/165/167.5/172.5mm options
- Compatibility: Road bike, 24mm spindle
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
ThinkRider via Amazon [amazon.com] has ThinkRider PP5 Spider Power Meter & 4 Bolt LIghtweight Aluminum Crankset. 110 BCD, BLE & ANT+, for Road Bikes, 160-172.5mm, $119 + Free Shipping.
Key Features:
Key Features:
- Accuracy: ±1% real-time power & cadence tracking
- Material: 7075 aviation-grade aluminum, ~20oz total weight
- Battery: 300h runtime, magnetic snap charging
- Connectivity: ANT+ & Bluetooth, works with Garmin/Wahoo/Zwift
- Durability: IPX7 waterproof, all-weather riding
- BCD: 110mm, 4-bolt spider
- Length: 160/165/167.5/172.5mm options
- Compatibility: Road bike, 24mm spindle
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11 Comments
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I also have a unit and more or less the conclusion is similar: for $100, it is great. Built quality is great, how fast and reliably it connects to my Garmin Edge is flawless, charging port is better than the 2-pin magnetic connector that is almost universal between Magene and Xcadey etc spider PMs, battery life is great.
The issue is that the power readings have a tendency to drift a bit after hard efforts.
I do not know if this is a Firnware fix away and when this is happening, but it is persistent. It is a few % off, it is not unusable, but worse than my Favero pedals or 4iiii single sided crank PMs.
Still, training or racing even with a PM is a huge improvement, even with less than perfect results...the price point is impressive and I would recommend this even of it is not ready to "destroy" the market of $300 left side crank PMs or $600 pedals...
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"Critical Lab/Real-World Testing (GPLama / Shane Miller)
Independent testing (multiple units, indoor + outdoor, against trusted baselines) found it does not meet its claimed ±1% accuracy:
Acceptable performance at low/steady power (around or below ~200–300 W).
Nonlinear offset and significant errors above ~300 W.
Residual torque issues after hard efforts/sprints: Power readings inflate and drift (sometimes substantially) until a manual zero is performed. This was reproducible across units and persisted after the latest firmware (as of April 2026 testing).
Cadence reporting can cut out around ~155 RPM (below the claimed 240 RPM).
Left/right balance and other metrics can become erratic post-sprint.
Manufacturer (ThinkRider) has acknowledged the residual torque/accuracy problems and indicated plans to address them in future products (not fixed on current hardware/firmware at the time of testing).
GPLama's conclusion: Not reliable enough for serious training or situations requiring consistent data, even at the low price.
More Positive/Practical User Experiences
Other testers and riders report better real-world results for typical use:
Tom Bowers Cycling (months of real training + a long UCI gravel race): Very close to Favero Assioma pedals (<1% difference) for steady-state, Zone 2, and climb pacing. No meaningful drift over long rides. Sprint accuracy still showed issues (drift at high/maximal efforts). Verdict: Excellent value for most cyclists who primarily need data for endurance/steady efforts rather than track-style sprinting.
Polish/European testers (e.g., comparisons vs. Wahoo Kickr): Small, repeatable differences; dual-sided measurement highlighted as a big plus (especially for riders with uneven L/R balance). Good enough for training for the majority of users despite not hitting pro-level precision at high watts.
Forum/Reddit/Chinese-carbon community comments: Mixed—some report solid everyday data after calibration; others echo the residual-torque warnings or note clearance/fit issues with certain crank arms (occasional filing needed)."
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