The JIMS 0.3110" precision reamer (7.899mm) ensures ultra-precise reaming of valve guides to this dimension. This professional tool guarantees the optimal operating clearance recommended by Harley-Davidson.
Specifications:
- Diameter 0.3110" (7.899mm) high precision
- Ground sharpening for optimal surface finish
- Heat-treated HSS high-speed steel
- Progressive cutting geometry
- Efficient evacuation of boring chips
Why several reamer sizes? The clearance between the guide and valve stem varies depending on:
- The type of engine (Evolution, Twin Cam, M-Eight)
- The function of the valve (intake or exhaust)
- Operating temperature specifications
- The cumulative tolerances guide + stem
Reaming to the exact dimension 0.3110" guarantees the operating clearance allowing thermal expansion, optimal lubrication and precise guidance without seizing or excessive wear.
Compatible with Harley-Davidson engines specifying this dimension (consult workshop manual). JIMS professional tool for precision cylinder head work.
When choosing a product, you will see several condition options: new or used (1, 2, 3, etc.). These numbers do not represent a quality grade or ranking, but simply different units of the same reference that we have in stock as second-hand parts. They also help facilitate communication and order identification.
All known compatibilities are indicated directly in the product listing. We recommend checking this information first.
If you have any additional questions or doubts, please contact us via the “A question about this product?” section in the FAQ, or on the following page.
Please specify your motorcycle model as well as the link to the relevant part so we can respond efficiently.
Our Harley-Davidson specialist team will reply within 24 hours.
Yes. All photos with our watermark show the actual product in stock. You will receive exactly the part shown in the images, in the visible condition at the time of purchase.
If you find these same photos on other websites, it means those sellers do not have the product. These are often unauthorized copies of our visuals. In this case, we recommend being cautious and verifying the origin of the listing.
Yes. All products displayed on the site are physically in stock and available for shipping unless stated otherwise.
When a part is not stocked in our warehouse, the mention “On order” clearly appears in orange below the price. Only in this case, the supply delay may be longer.
We ship worldwide. Orders are carefully prepared and handed over to the carrier within a maximum of 48 working hours.
In Europe, delivery is possible within 48 to 72 working hours after shipment via UPS or FedEx. With Mondial Relay, the average delivery time is about 10 working days depending on the destination and pickup point. Delivery times for other international destinations vary depending on the carrier and selected service.
We work with Colissimo, Mondial Relay, UPS and FedEx, selectable at checkout.
Each part is carefully packaged to ensure optimal protection during transport.