Get free shipping, on most items, with your $50 purchase today! Same day shipping on most orders if placed by 3pm PST.
This offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and some exclusions apply.
Some large and/or heavy items are subject to additional oversize charges that are separate from standard shipping costs.
Bike Build Process
All bikes are built, tested, tuned, and ready to ride upon shipment. The bike build process typically takes 2-3 days to complete depending on the bike model and the complexity of the build.
Orders for in-stock items placed by 3PM PST usually ship on the same day. Orders that include special-order or backordered items may be subject to shipping delays depending on product availability. Refer to estimated delivery times in cart when selecting shipping options.
We strive to get you the gear you want at a competitive price. If you find an item we offer from a competitor at a lower price, let us know. We will do our best to instantly match their price. To qualify for the Price Match, your purchase must meet the following conditions:
Price Matches may only be honored on identical items. The product must be the same make and model (i.e., the same size, color, year, etc.).
The identical items must be in stock and ready for immediate delivery at the competing dealer.
Price Matching voids any currently advertised Jenson USA promotions or special offers (i.e. free shipping, free headset...). If the competitor offers free shipping on the specific item, Jenson USA will still match the price and free shipping offer.
The product must be brand new. We do not Price Match refurbished or used items.
Our Price Match Policy is valid only for qualified Internet retailers.
The competing dealer must be an authorized US retailer for the brand. This means that the manufacturer lists this dealer as an authorized and official retail web site.
The competing online retailer's principle business must be located within the United States.
Our Price Match Policy does not combine with any competitor’s coupons, rebates, promotional offers, or product-combo deals on your order.
Some items may not be eligible for price match due to manufacturer pricing requirements.
The Price Match Policy is subject to change at any time.
If you have any questions regarding a Price Match, one of our Gear Advisors will be happy to lend you expert guidance via phone, email, or chat.
Price Matches made post-purchase will be refunded via gift card
4iiii Precision 3 Power Meter Shimano Ultegra 8100
The 4iiii Precision 3 Power Meter is engineered to raise the bar on existing expectations for single-sided power meters—with power measurement accuracy at +/- 1%, long battery life, and long-term durability to help you get the most from your rides. With power measuring pods installed into factory crank arms, the Precision 3 doesn’t compromise performance or compatibility. This power meter is the only single-sided power meter to use 3 strain gauges, allowing it to measure all power output forces (between 0-4,000 watts), and offer more accurate readings than many power meters on the market. The Precision 3 adds only 9 grams to the weight of the factory crankarm, features an IPx7 waterproof rating, and is backed by a 3-year manufacturer warranty for precision you can count on.
Adds only 9 grams to the weight of the original factory crankarm
3 strain gauges for 3D accuracy to precisely measure all power output forces
+/- 1% accuracy since more accurate data means more accurate training
Pod is installed into the Shimano Ultegra 8100 crankarm for power measurements without needing to switch from your preferred crankset
IPx7 waterproof rating for reliable power measurement in any condition
Dependable wireless connectivity using ANT+ or Bluetooth connections to your favorite cycling computer or device
Adds 9g to the weight of crankarm
Up To 800 Hours
CR2032 Coin Cell
Power Measurement Range (Watts)
Cadence Range (RPM)
30 - 170
Water Resistance Rating
Wireless Connection Protocols
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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Q & A
Most items SHIP SAME DAY if ordered by 3pm PST and FREE SHIPPING on orders over $50. Please note that oversize charges may still apply on some heavy or large items and free shipping does not apply to PO Boxes.
1-day free standard Shipping on most orders to California, 2-day free standard Shipping on most orders to Nevada, Arizona, & Utah. Other states can expect delivery within 3 to 5 days.
Jenson USA ships worldwide, including APO/FPO addresses. For a more specific shipping quote and transit time estimate, simply add the items you are interested into your shopping cart and look for the "Shipping Options" box at the top of the cart page. You don't have to login or create an account to see shipping charges and time in transit estimates.
Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your address, we can accept your foreign credit card and ship it to a US address for you.
4iiii Precision 3 Power Meter Shimano Dura-Ace 9200Trusted
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