The Ryobi RY40HPST01K is the complete kit version of the 40V HP brushless 16 in. string trimmer, bundled with a 4.0 Ah 40V HP battery and charger for a ready-to-run package. The 40V HP brushless motor provides gas-competitive torque for tackling thick grass, heavy overgrowth, and precise edging along driveways and garden borders. A carbon fiber shaft keeps weight down, and the REEL EASY+ 3-in-1 bump feed head gives operators flexibility across bump-feed, fixed-line, and bladed modes. EXPAND-IT attachment compatibility allows the tool to do double duty as an edger, cultivator, blower, or other EXPAND-IT implement — maximizing the value of the 40V HP platform investment.
What is included in the RY40HPST01K kit?
The RY40HPST01K includes the 40V HP Brushless 16 in. String Trimmer, one REEL EASY+ 3-in-1 Bump Feed Head, one 40V HP 4.0 Ah battery, and one 40V charger. No additional purchases are required to begin trimming.
Is the 40V HP battery in the RY40HPST01K compatible with other Ryobi 40V tools?
Yes. The 40V HP battery included with the RY40HPST01K is compatible with all Ryobi 40V HP outdoor power tools — including mowers, blowers, chainsaws, and hedge trimmers in the 40V HP family. Note that 40V HP batteries are not interchangeable with the 18V ONE+ platform.
How does the RY40HPST01K compare to a gas trimmer?
The 40V HP platform is designed to match the performance of gas-powered trimmers in its class — delivering sustained torque for thick grass and heavy vegetation without fuel mixing, carburetor maintenance, or exhaust emissions. The brushless motor and 0.095 in. line gauge reflect its positioning as a gas-replacement tool for residential and semi-commercial use.
Should I buy the RY40HPST01K or the RY40HPST01B?
Choose the RY40HPST01K if you are new to the 40V HP platform or need a charger — it provides the complete system in one purchase. Choose the RY40HPST01B (tool only) if you already own one or more 40V HP batteries and a compatible charger, as you will save money by not paying for redundant power equipment.
What EXPAND-IT attachments work with the RY40HPST01K?
The RY40HPST01K accepts all Ryobi EXPAND-IT attachments, including the straight edger (AC04002), cultivator (AC04003), leaf blower (AC04010), pole saw (AC04006), and others sold separately. The attachments connect to the tool shaft via a universal coupler, turning the trimmer into a multi-tool outdoor platform.
# Ryobi 40V HP Brushless 16 in. String Trimmer Kit (4.0 Ah) **Model:** `RY40HPST01K` **Brand:** Ryobi **Category:** String Trimmer > The Ryobi RY40HPST01K is the complete kit version of the 40V HP brushless 16 in. string trimmer, bundled with a 4.0 Ah 40V HP battery and charger for a ready-to-run package. The 40V HP brushless motor provides gas-competitive torque for tackling thick grass, heavy overgrowth, and precise edging along driveways and garden borders. A carbon fiber shaft keeps weight down, and the REEL EASY+ 3-in-1 bump feed head gives operators flexibility across bump-feed, fixed-line, and bladed modes. EXPAND-IT attachment compatibility allows the tool to do double duty as an edger, cultivator, blower, or other EXPAND-IT implement — maximizing the value of the 40V HP platform investment. ## Specifications | Attribute | Value | |---|---| | Product Type | String Trimmer | | Voltage (V) | 40 | | Platform | 40V HP | | Cordless / Corded | Cordless | | Motor Type | Brushless | | Cut Width In | 16 | | Line Diameter In | 0.095 | | Feed Type | Bump Feed (REEL EASY+ 3-in-1) | | Attachment Capable | Yes | | Shaft Material | Carbon Fiber | | Tool Only | No | | Batteries Included | 1 | | Battery Ah | 4 | | Battery Included | Yes | | Charger Included | Yes | | Warranty | 5-year limited | ## What's Included - (1) RYOBI 40V HP Brushless 16 in. String Trimmer (RY40HPST01K) - (1) REEL EASY+ 3-in-1 Bump Feed Head - (1) 40V HP 4.0 Ah Battery - (1) 40V Charger Source: https://www.jaspecs.com/ryobi/string-trimmer/ry40hpst01k-ryobi-40v-hp-brushless-16-in-string-trimmer-kit/