The Mafell KSS 40 18M bl Cordless Cross-Cutting System Kit with 1.4m Flexi-Guide, 5.5 Ah Batteries, and Charger delivers professional-grade rail-guided sawing and portable cordless operation for interior finishing, flooring, framing, trim work, and mobile panel sizing. Powered by an efficient brushless motor on the 18V Cordless Alliance System (CAS) platform, this high-capacity kit pairs the KSS 40 18M bl saw with the rollable Flexi-Guide FX 140 track and a dual-battery Power-Set 2 starter package to ensure continuous runtime and clean cross-cuts on the job site.

Designed for rapid deployment and ease of transport in cramped spaces or scaffold environments, the KSS 40 18M bl features a quick-release catch that detaches the saw from its integrated cross-cut track in a single action, instantly transforming it into a standalone portable circular saw. The onboard rail system includes a fixed stop and a finely calibrated adjustable stop for repeatable angle cuts from +45 degrees to -60 degrees. Paired with the rollable 1.4 m (4.6 ft) Flexi-Guide rail, operators can size long panels and execute precise cross-cuts without cumbersome rigid guide rails, while the integrated splinter guard prevents tear-out along the cut line.

The included Power-Set 2 supplies two 18V 5.5 Ah 99Wh LiHD battery packs equipped with high-current busbars and processor-controlled monitoring to maintain stable power delivery under heavy cutting loads. The APS M charger ensures fast, reliable recharging, while the heavy-duty T-MAX transport case keeps the saw and accessories organized and protected during transit.

Features & Benefits

• Brushless Motor Technology: Compact brushless motor provides efficient power transfer, extended runtime, and long service life with zero maintenance.
• Rollable Flexi-Guide FX 140: Rollable 1.4 m (4.6 ft) guide rail flexes compactly for effortless transport in vehicles and tight spaces while maintaining straight-line precision.
• Complete Power-Set 2 Kit: Includes two 18V 5.5 Ah 99Wh LiHD batteries and a 120V APS M charger to provide high-capacity runtime and continuous jobsite operation.
• Quick-Release Rail Mechanism: Detaches the saw from the guide track in a single action to switch between rail-guided cross-cutting and freehand circular saw operation.
• Integrated Angle Stops: Features one fixed stop and one finely calibrated adjustable stop for accurate miter cuts from +45 degrees to -60 degrees.
• High Cutting Depth: Delivers 0 to 40 mm (0 to 1-9/16 in.) depth of cut on the track and up to 42 mm (1-5/8 in.) off the track.
• High-Density LiHD Technology: Batteries feature enlarged copper alloy connectors and high-current busbars to optimize power delivery under heavy loads.
• Cordless Alliance System Compatibility: 100% cross-brand compatibility with 18V batteries, chargers, and tools across the multi-manufacturer CAS platform.
• T-MAX Transport Case: Heavy-duty storage box protects the saw and keeps accessories organized for transport between job sites.

What's Included

• (1) MAFELL KSS 40 18M bl Cordless Cross-Cutting Saw
• (1) Guide Track S (Max. Cutting Length 292 mm / 11-1/2 in.)
• (1) Flexi-Guide FX 140 Rollable Guide Rail, 1.4 m (4.6 ft) (Ref. No. 204372)
• (2) Battery-PowerTank 18 M 99 LiHD (18V, 99 Wh, 5.5 Ah) (Ref. No. 209594)
• (1) APS M Battery Charger (120V USA/CAN plug) (Ref. No. 209594)
• (1) 120 mm x 1.2/1.8 x 20 mm 24-Tooth TCT Saw Blade (Ref. No. 092558)
• (1) Parallel Guide Fence (Ref. No. 203180)
• (1) Hose Connector (Ref. No. 203782)
• (1) Dust Bag (Ref. No. 206787)
• (1) 4 mm Allen Key
• (1) T-MAX Transport and Storage Box

Choose this complete kit configuration when mobile panel sizing, rollable guide track convenience, and high-capacity 5.5 Ah batteries are required for out-of-the-box jobsite productivity. For users who already own CAS batteries and rigid guide rails, the bare tool variant (SKU 91D524) is available separately.

Shipping: Beaver Industrial Supply offers free shipping on orders over $199, with the exception of Sawstop and Laguna, which require additional fees to be collected. Other exceptions apply as noted on product pages.

We reserve the right to determine the fastest and most cost-effective manner of transportation for all orders that qualify for free shipping. Our shipping carriers cannot deliver to PO box or U.S. military post office box addresses, such as APO and FPO, so we require a physical street address for delivery. We use USPS, which typically takes 2-8 days for delivery, depending on your location, for smaller items and UPS Ground for all other ground shipments under 150 pounds.

• Returns: We accept returns and exchanges for a fee up to 30 days in unopened, new, and unused condition in the original packaging. Exceptions apply.

Please note, NO REFUNDS will be given on any new, used, or damaged item if it is not returned in the original packaging, no matter what condition the packaging is in. If the item qualifies for free shipping, you will be charged the original shipping cost and are responsible for shipping the product back with the shipping carrier of your choice.

We must receive the item undamaged. We recommend you package it accordingly and purchase insurance for higher-priced items to ensure you receive the full refund minus any incurred fees as applicable. We reserve the right to refuse the return of accessories.

Because items are your responsibility until they reach us, we recommend that you send the parcel using a delivery service that insures you of the value of the goods. Return shipping is at the customer's cost. At Beaver Industrial Supply’s discretion, delivery charges can be refunded if the goods are defective.

Returns require a return authorization number. Please call customer service at 314-773-5999 or submit a customer service inquiry to start the exchange or return process and receive an authorization number.

Machinery too large for parcel shipment (palletized or crated) is only returnable if there is a material defect that cannot be resolved by replacing components.