- Regular price
- $4,999.00
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- Regular price
- $4,999.00
Estimated Shipping Time
Estimated Shipping Time
At Summit Forge Supply, we offer free standard shipping on all U.S. orders, with most orders processing within 1–2 business days and delivering in approximately 3–5 business days. We ship via trusted carriers including USPS, UPS, FedEx, and LTL freight providers, and all orders include tracking and shipment insurance. If your order is delayed, damaged, lost, or missing items, please contact us within 7 days so we can promptly assist with a replacement or refund. Returns are accepted within 30 days on unused items in original packaging, with return shipping covered by Summit Forge Supply. See full policy here: Shipping Policy
What Is Your Return Policy?
What Is Your Return Policy?
Summit Forge Supply accepts returns on eligible U.S. orders within 14 days of delivery, provided items are unused, undamaged, and in their original packaging with proof of purchase. Returns must be initiated within 7 days of receipt, and approved returns include prepaid return shipping; refunds are issued to the original payment method within up to 14 days after inspection, with a 25% restocking fee for change-of-mind returns. Defective, damaged, incorrect, or lost items qualify for a full refund or replacement at no cost to the customer when reported promptly. Custom or personalized items, perishable goods, gift cards, and downloadable products are non-returnable. See full policy here: Return Policy
How The MiniTrencher SiBore SB431 Compares To Other Horizontal Boring Options
Landscapers, irrigation installers, and electrical contractors evaluating horizontal boring equipment usually face this question: should I get a single-size micro boring tool, this SB431 full package combining multiple bore sizes, or step up to a full-size contractor-grade boring machine?
Here's the honest comparison:
| Feature | Single-Size Micro Boring Tool, SB215/SB216 ($2,500-$3,200) | MiniTrencher SiBore SB431 Full Package ($4,999) | Full-Size Contractor Boring Machine ($8,000-$17,000+) |
|---|---|---|---|
| Engine | Honda GX35, 4-stroke | Honda GX35, multi-position 4-stroke | Larger Honda engines, 5.5-13 HP |
| Bore Sizes | 1-in. only | 1-in. x 24-ft., 2-in., and 4-in. holes | 2-in. to 18-in. depending on model |
| Portability | Fits in a trunk | Fits in a trunk | Requires a trailer or truck bed |
| Included Accessories | Accessories for one bore size only | Weather-resistant nylon case, MS-10 motor stand, six 36-in. boring rods, swivel cable puller, two boring heads, two augers, three 32-in. extensions | Varies, often sold separately by size |
| Boring Method | Waterless | Waterless, eliminates mud and reduces cleanup | Varies, some require water or mud systems |
| Transmission | Enclosed, grease-lubricated | Enclosed, grease-lubricated with spur gear reduction | Sealed spur gear, higher-capacity gearboxes |
| Best Suited For | Small sprinkler and cable jobs needing only 1-in. bores | Landscapers and contractors needing 1-in., 2-in., and 4-in. bores in one kit | Utility contractors and municipalities boring larger diameters |
Why The MiniTrencher SiBore SB431 Is Worth The Investment
This isn't just a boring drill, it's the combined best of MiniTrencher's SB216 and SB215 microBore models, giving landscapers and contractors 1-in., 2-in., and 4-in. bore capability plus extensions in a single kit instead of buying separate tools for each size.
The SB431 specifically addresses the needs of landscapers, sprinkler system installers, plumbers, and electrical contractors who need to bore under sidewalks, driveways, and patios for irrigation lines, cable, or conduit without the mess of traditional trenching or water-based boring methods.
One Kit, Three Bore Sizes, No Mud. The SB431 includes all the accessories of the 1-in. microBore model plus the 2-in. and 4-in. augers and extensions of the traditional model, and its waterless boring method eliminates the muddy mess and cleanup time that comes with water-jetting or mole-style boring tools.
Built For On-The-Go Professional Use
High-speed, lightweight design optimizes portability and ease of use for professionals moving between job sites
Compact enough to fit in a trunk, making it practical for landscapers, plumbers, and electricians without a dedicated equipment trailer
The multi-position Honda GX35 engine bores 1-in. x 24-ft., 2-in., and 4-in. holes in under five minutes
Engineered For Durable, Smooth Operation
The enclosed, grease-lubricated transmission with spur gear reduction supports long-term durability under repeated use
Includes a weather-resistant nylon case to protect and organize all included rods, heads, augers, and extensions during transport
Best used in combination with the GeoRipper handheld trencher for safer and faster production on the job
Real Savings
Combining three bore sizes into one kit avoids the cost of purchasing separate single-size boring tools
The waterless boring method reduces cleanup time and avoids the mess and site damage of water-based boring methods
A compact, trunk-friendly design reduces the need for a dedicated trailer or larger vehicle just to transport the equipment
Free shipping and no sales tax through Summit Forge Supply keeps the total cost down compared to buying elsewhere and paying tax and freight separately
The Bottom Line Landscapers, sprinkler installers, and electrical contractors who need to bore under sidewalks, driveways, and patios in multiple sizes can't afford separate tools for every bore diameter or the mess of water-based boring methods. The MiniTrencher SiBore SB431 is built with 1-in., 2-in., and 4-in. bore capability, a waterless boring method, and a full accessory package, so it handles the full range of common bore sizes in one portable kit. For anyone running underground utility or irrigation lines as a regular part of the job, this is the machine built to get under the obstacle cleanly and quickly.
- High-speed, lightweight design optimizes portability and ease of use for professionals on the move
- Compact and portable design is small enough to fit in a trunk, perfect for various job sites
- Equipped with a multi-position Honda GX35, 4-stroke engine for efficient and fast boring
- Capable of boring 1-in. x 24-ft., 2-in., and 4-in. holes in less than five minutes
- Waterless boring method eliminates mud and reduces cleanup, enhancing convenience
- Enclosed, grease-lubricated transmission with spur gear reduction for durable, smooth operation
- Includes a weather-resistant nylon case, MS-10 motor stand, six 36-in. long boring rods, swivel cable puller, two boring heads, two augers, and three 32-in. extensions
- Best used in combination with the GeoRipper® handheld trencher for safer and faster production