IMS Precision Competition Basket B70 1T H26.5 E (E61 / 58mm) overview
IMS Precision Competition Basket B70 1T H26.5 E (E61 / 58mm) review: this IMS B70 Competition Series basket is the 26.5 mm height, single-cup variant with a 70 mm border and Ø 58 mm tamper compatibility. It is built for one-cup extraction, but it is not a forgiving basket.
IMS Precision Competition Basket B70 1T H26.5 E at a glance
For shoppers comparing the IMS Precision Competition Basket B70 1T H26.5 E (E61 / 58mm) review options, this is the B701TH26.5E version in the IMS B70 line. IMS describes B70 as a precision 1-cup filter series with a 70 mm border.
That makes this the 26.5 mm height variant in the Competition Series, with the page also listing B701TH26.5E under SKU 1 Cup / Single.
IMS Precision B70 series position and size variant
The B70 family is available in 18.5 / 19.5 / 24.5 / 26.5 mm heights, so the height is the main difference to track within the range. This version is the 26.5 mm shaft geometry model shown on the page.
In practice, that places it as a dedicated single-cup basket rather than a general-purpose option, and it is the one to compare against the other B70 heights if you want a different fit.
Design and build
The basket uses a truncated cone, or shaft, geometry. Its surface treatment focuses on smoothness and passivation instead of decorative detail.
Truncated cone basket geometry
The B70 series is described as having a truncated cone shape, also called shaft geometry. That geometry is part of how the basket is built around its single-cup role.
Its curvature radius is engineered to balance capacity with height, which is the core design idea behind the basket's compact format.
Surface finishing and passivation
Electropolishing gives it a high-grade sanitary smooth surface. Wet vibrofinishing with ceramic inserts, pickling for passivation, and drying with natural corncob are all listed as part of the process.
Those steps point to build quality that is centered on surface treatment and material integrity, not on visible styling.
Features and performance
The feature set centers on competition perforation and a normal 177-hole layout. The basket is set up for precision consistency in a one-cup format.
Competition perforation and hole pattern
Competition Perforation is a patented relaminated and recalibrated process for precision consistency. The basket uses a 177-hole normal pattern with 0.30 mm holes.
The perforated area is optimized for 1-cup use, so the layout is aimed at single-espresso work rather than broader versatility.
B70 1T H26.5 E performance in single shots
Coffeeparts.com.au says the basket delivers consistent results for single espresso shots. That fits the series focus on balancing capacity with height for a controlled extraction.
The result is a basket that looks intended for repeatability first. If you want a smoother path to one-cup consistency, that is the main draw here.
What owners say about the IMS Precision Competition Basket B70 1T H26.5 E (E61 / 58mm)
Owner feedback on Reddit is mostly positive, especially when the basket is filled correctly. The praise centers on flow behavior and a cup profile that some people compare with a double basket.
Owners praise low-channeling results
Several Reddit owners praise the B70 1T H26.5 E setup for producing no channeling. That is the clearest recurring theme in the owner feedback.
The same feedback suggests the basket can reward careful setup, which lines up with its precision-first design.
Flavor notes from Reddit owners
Some Reddit owners say the core is solid and the flavor is like the double basket. That gives this model a place for shoppers who care about taste character as much as flow control.
The feedback is encouraging, but it still depends on careful dosing and fill height rather than loose setup habits.
Who the IMS Precision Competition Basket B70 1T H26.5 E (E61 / 58mm) is for
This basket suits people who want a single-cup option and already use a Ø 58 mm tamper. It also fits users willing to spend time on fill level rather than rely on guesswork.
Who this single-cup basket suits
It is for people who want a precision 1-cup basket in the B70 series for single espresso.
It also makes sense for users who prefer ridgeless construction and are comfortable dialing in the basket carefully.
Trade-offs to know
The biggest trade-off is forgiveness. It can perform well, but the fill window is narrow and setup matters.
Dialing in the fill level matters
Reddit owners describe the basket as tricky, with the filling level being critical to get right. That means repeatable dosing matters more here than with an easier basket.
If you want a basket that stays comfortable without much adjustment, this one may feel demanding.
Underfilling can lead to channeling
Owners also complain that too low can cause crazy channeling. That is the main downside and the one to take seriously before buying.
So the basket can work well, but it does not sound forgiving when the puck sits below the right fill level.
How we researched the IMS Precision Competition Basket B70 1T H26.5 E (E61 / 58mm)
Brewfolia read the manufacturer's published product description, specifications, design notes, features, compatibility notes, model versions, and performance notes, then checked coffeeparts.com.au and Reddit for third-party context to inform this page's summary and owner feedback for accuracy. The basket was not bought, received, unboxed, or used.
IMS Precision Competition Basket B70 1T H26.5 E (E61 / 58mm) verdict
Whether the IMS Precision Competition Basket B70 1T H26.5 E is worth it depends on how much setup you want to manage. The build quality notes look careful, and owner feedback is positive, but the basket is still picky about fill level.
If you want an alternative, the B70 series also comes in 18.5 / 19.5 / 24.5 mm heights. This version is best for people who want a focused single-cup basket and do not mind the dialing-in step.
