Strong tip
A firm-plus tip and high kick point keep the head from overloading, holding launch and spin down for aggressive players.
The firmest tip in the 1K family, for low launch and low spin
Mitsubishi Chemical Β· Wood ShaftsTENSEI 1K Black is built for fast, forceful swings that need a low, boring flight. It carries the firmest tip section in the 1K lineup, with 1K carbon fiber in the handle, Xlink Tech Resin in the tip and 40-ton fiber to manage tip stiffness and torque. It is commonly offered as a Titleist custom option.

Why golfers choose it
A firm-plus tip and high kick point keep the head from overloading, holding launch and spin down for aggressive players.
A focused layer of 1K carbon fiber in the handle adds strength and lowers torque without a harsh feel.
Offered in 65, 75 and 85 classes weighing 67 to 90 grams, in S, X and TX only.
Product details
| Brand | Mitsubishi Chemical |
|---|---|
| Model | TENSEI 1K Black |
| Product type | Wood shaft |
| Launch / spin | Low / Low |
| Flex profile (butt / mid / tip) | Med / Firm / Firm+ |
| Weights | 67 to 90 grams (65, 75, 85 classes) |
| Flexes | S, X, TX |
| Torque | 2.8 to 3.6 |
| Kick point | High |
| Tip OD / butt OD / raw length | 0.335 in. / 0.600 to 0.620 in. / 46 in. |
1K Black is typically sold as a stock or custom option through Titleist, so contact Grater Golf for current availability and pricing. On the fit chart, S starts at 81 to 90 mph, S or X fits 91 to 105 mph, and X or TX fits 106 mph and above in every weight. Tip trim before install is 0 in. for driver, 0.5 in. for a 3-wood, 0.75 in. for a 5-wood and 1 in. for 7- and 9-woods.
Product questions
Grater Golf support
Tell us your club, swing speed and ball flight, and weβll help you choose the right Mitsubishi shaft, weight and flex, then build it for you.
Ask Grater GolfFree standard shipping on most orders $100+ within the contiguous U.S. Eligible items may be returned within 30 days. Custom, modified, cut, installed, and made-to-order products may be final sale.