Engine
Twin-Turbo 2.0 Ltr. Inline 4 Cyl
Provides a powerful and efficient driving experience.
2026 Grand Design Lineage Series M 25TK
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Layout & Media
Explore the floorplan, 3D tour
Complete Class C Specifications
2026 Grand Design Lineage Series M Overview
The 2026 Grand Design Lineage Series M is the perfect companion for your adventures, offering a seamless blend of comfort and performance. With a length of 26 ft and a GVWR of 12,125 lbs, this new Class C is designed to accommodate up to 4 people, making it ideal for family trips or a getaway with friends. It boasts a powerful Twin-Turbo 2.0 Ltr. Inline 4 Cyl engine, ensuring an enjoyable driving experience. Enjoy the convenience of modern amenities, including a standard shower and spacious living area. Embrace the freedom of the open road with this versatile class c. Schedule your tour today!
Premium Features & Highlights
Sleeps 4 for Comfortable Travel
15,000 BTU Air Conditioning for Year-Round Comfort
Standard Shower for Relaxing After Outdoor Activities
Single Slide-Out for Extra Space
35-Gallon Black Water Capacity
Select a category to view specs
Overview
Vehicle Identification & Details
8 specifications available
- Category
- Class C
- Condition
- new
- Floorplan
- 25TK
- Make
- Grand Design
- Model
- Lineage Series M
- Stock Number
- LAG7726
- VIN
- W1X9N33Y0SN343201
- Year
- 2026
Size & Weight
Dimensions, Weight, Construction & Exterior
9 specifications available
- GVWR
- 12,125 lbs
- Length
- 25.67 ft
- Exterior Height
- 11.42 ft
- Interior Height
- 6.67 ft
- Width
- 7.92 ft
- Awning Length Ft
- 16 ft
- Awnings Count
- 1
- Chassis
- Mercedes-Benz Sprinter 4500 Cab Chassis
- Slides
- 1
Sleeping & Layout
Beds, Layout, Living & Comfort
3 specifications available
- Bunk Beds Count
- 0
- Primary Bedroom Location
- Rear
- Sleeps
- 4
Kitchen & Dining
Cooking, Dining & Appliances
2 specifications available
- Dinette
- Yes
- Refrigerator Size
- 12
Bathroom & Facilities
Comfort & Privacy
1 specifications available
- Shower Type
- Standard
Water Systems
Tanks & Plumbing
4 specifications available
- Black Water Capacity
- 35 gal
- Fresh Water Capacity
- 36 gal
- Gray Water Capacity
- 30
- Water Heater Type
- Tankless
Power & Electrical
Electrical, Entertainment & Safety
1 specifications available
- Seat Belts
- Yes
Climate Control
Heating & Cooling
2 specifications available
- Ac Btu
- 15,000 BTU
- Heater Btu
- 20,000 BTU
Standard Features & Equipment
36" x 80" Twin / 36" x 74" Twin / Combined 90" x 74" King
Under-Bed Storage
GCWR (lbs): 15249
GAWR Rear (lbs): 7934
10 Cu/Ft 12V 3 Door Refrigerator, 2 Burner Stove w/ Glass Cover and Overhead Range Hood, Air Fryer / Convection Microwave Oven, Solid Surface Kitchen Countertop w/ flip up extension, Matte Black pull out Kitchen Faucet, MaxxAir® Power Vent with Built-In Rain Cover, Stainless Steel Sink w/ countertop mounted glass washer,
AquaHave Rainfall Shower and Wand System, Fully convertible 36" x 32" bathroom to living room, plus hidden drain, Matte Black Bathroom Faucet and Shower Tower, Matte Black Retractable Shower Door, Solid Surface Lav Countertop w/ Undermount Stainless Sink, Porcelain Toilet, Matte Black Bathroom Harwards Accessory Package, 12V Power Vent,
Fiberglass Front Cap w/ Diamond Shield® Paint Protection, Front Cap Window UV reflective film & Power Shade w/ Reflective Material, Fiberglass Front Rear Cap, Steel Reinforced Fiberglass Running Boards w/ step treads, Blackout LED Marker, Brake & Tail Lights, Girard Armless Awning w/ Wind Sensor, Slideout Topper Awning, Rubber Entry Assist Handle, Aluminum Exterior Roofline Sport Rail, Quick Connect LP Connection Compartment, Aluminum Power Entrance Step, 40" Exterior 12V LED Smart TV Compartment w/ GFCI Receptacle & HDMI Outlet, Rockford Fosgate Exterior Sound System w/ Marine Speakers, Lighted Exterior Belt Rail, D/P Side and Back Up Cameras, Lippert On-The-Go™ Ladder Mounting Bracket,
Entry Assist Handle, Natural Teak Wood Grain Cabinetry, Aluminum Framed Interior Walls, Bed Base and Cabinetry (select locations), Technoform EPP, Push/Lock Cabinet Doors Latches w/ Soft Close Door & Drawers (Hidden Hinges), Solid Maple Dovetail Drawer Boxes w/ Soft Close Ball Bearing Drawer Guides, Shaw Commercial Grade Vinyl Flooring, Soft-Touch Padded Ceiling (Including Sideout), Square LED Ceiling Lights, 32" 12V LED Smart TV (Living Room & Bedroom), Rockford Fosgate Interior Sound System, Square Magnetic Speakers & Powered Subwoofer, 4000K Interior LED Lighting Package (Square / Strip), COBRA (Cab Over Bunk Ram Air), Entry Step Battery Compartment, Multiple Charging Ports (USB, USB-c, 120V), Molded front overhead bunk with Lights, Chargers, Privacy Curtain and A/C, Power Theatre Seating w/ Ratcheting Head Rests, Power Recliners and Dual Composite Sofa Tables, Rear Wardrobe, Front Bunk Ladder,
Lineage Series M Package, Suspension Package, Ultra Leather Soft Touch Interior Package, Lineage Series M Wheel Package,
MORryde® Tubular Steel Chassis Halo Upfit, Aluminum Exterior Luggage Doors (Side Swing & Key Alike), Heavy Gauge Aluminum Framed Sidewall, Roof and Floor - Laminated w/ Block Foam Insulation, Exterior Sidewall - Talon Sheet Glass w/ Azdel OnBoard Composite, Interior Sidewall - Composite Elk Board w/ Decorative Wallboard, Exterior Roof - Textured Fiberglass w/ Titan Gasket Seal System / Rain Gutters, Interior Roof - Soft Touch Ceilings w/ 1 piece Elkboard, Aluminum Skinned Slideroom End Walls w/ Windows, Rigid HVAC Ductwork Throughout, Dual Pane European Acrylic Windows w/ Integrated Screen, Privacy Shade & Black Trim Kit, European Entry Door (Dual Latch, Poly Window, Integrated Shade, Side Slide Screen Door), Aluminum European Power Entry Step, Rotocast Storage Compartments w/ timed Lighting, Lippert SlimRack® Slide-Out, Steel Reinforced, Insulated, Fiberglass Wingwalls w/ Diamond Shield® Paint Protection, 12V (DC) w/ Spyder Controls DC Distribution panel & 120V (AC) harnesses, SharkBite Evo Pex Push2Connect Plumbing System (Max SS braided shut offs), Aluminum Roof Sport Rack, One piece Eternabond Slideout Roof, Steel Stepwell / Battery Box with Temp Sensor, Aluminum Framed Interior Walls, 3500lbs Tow Hitch w/ 7 Way Round & 4 Way Flat, 10 Cu/Ft 12V 3 Door Refrigerator, 2 Burner Stove w/ Glass Cover and Overhead Range Hood, Air Fryer / Convection Microwave Oven, Solid Surface Kitchen Countertop w/ flip up extension, Matte Black pull out Kitchen Faucet, MaxxAir® Power Vent with Built-In Rain Cover, Stainless Steel Sink w/ countertop mounted glass washer, 36" x 80" Twin / 36" x 74" Twin / Combined 90" x 74" King, Under-Bed Storage, 32" LED Smart TV, LED Reading Lights, USB Charging Ports, Privacy Curtain, Fiberglass Front Cap w/ Diamond Shield® Paint Protection, Front Cap Window UV reflective film & Power Shade w/ Reflective Material, Fiberglass Front Rear Cap, Steel Reinforced Fiberglass Running Boards w/ step treads, Blackout LED Marker, Brake & Tail Lights, Girard Armless Awning w/ Wind Sensor, Slideout Topper Awning, Rubber Entry Assist Handle, Aluminum Exterior Roofline Sport Rail, Quick Connect LP Connection Compartment, Aluminum Power Entrance Step, 40" Exterior 12V LED Smart TV Compartment w/ GFCI Receptacle & HDMI Outlet, Rockford Fosgate Exterior Sound System w/ Marine Speakers, Lighted Exterior Belt Rail, D/P Side and Back Up Cameras, Lippert On-The-Go™ Ladder Mounting Bracket, COBRA Airflow, Mercedes-Benz® Sprinter 4500 Cab Chassis with 170" Wheelbase, GVWR 12,125 lbs. / GCWR 15,250 lbs., 2.0 Ltr Inline 4-Cylinder High Output TwinTurbo Diesel (208HP/332lb-ft), 9G-TRONIC Automatic Transmission / Rear Wheel Drive, Alternator 14V 280A, Driver/Passenger HeadRest Safe (permanent install), Comfort Package, Driver Convenience Package, Power Windows & Door Locks w/ Multiple Key FABs, MBUX Multimedia System w/10.25 touchscreen (AM/FM, Apple® CarPlay™ / Android® Auto™), Comfort Plus Package, Thermotronic Automatic Climate Control, Multifunctional Leather Steering Wheel (Heated, Adjustable - Angle), D/P Seats - Swivel, Heated, Power, Arm Rests, Storage Pockets and Lumbar Support, D/P Door Mounted Assist Handles, 115V Socket / USB-C Socket 5V / 12V Outlet Driver Seat Base, Active Brake Assist, Crosswind Assist, Attention Assist, Hill Start Assist, Fog Lamps with cornering light function, High Beam Assist, LED Tail, Brake, Marker, Turn and Backup Lights, LED High Performance headlamps, Dual Chassis Battery 12V 92AH 850A (w/disconnect), Jump Start Terminal, Electronic Stability Program (ESP), Acoustic Package, Park brake lever, folding, Winter Package Plus, Wet Wiper System / Rain Sensor, Emergency Call System (ECALL), Heated & Electrically Adjustable Exterior Mirrors, Dashboard Charging Package, Front Cup Holders, Outside Temperature Gauge, 215/85R16 All-Season Tires, Tire Pressure Monitoring Lamp (TPMS x 6 tires), Front & Rear Mudflaps, Axle Ratio 4,727, Cockpit Privacy Shades (Windshield, Driver & Passenger), Fiberglass Running Boards w/ traction tread and Diamond Shield® Paint Protection, Entry Assist Handle, Natural Teak Wood Grain Cabinetry, Aluminum Framed Interior Walls, Bed Base and Cabinetry (select locations), Technoform EPP, Push/Lock Cabinet Doors Latches w/ Soft Close Door & Drawers (Hidden Hinges), Solid Maple Dovetail Drawer Boxes w/ Soft Close Ball Bearing Drawer Guides, Shaw Commercial Grade Vinyl Flooring, Soft-Touch Padded Ceiling (Including Sideout), Square LED Ceiling Lights, 32" 12V LED Smart TV (Living Room & Bedroom), Rockford Fosgate Interior Sound System, Square Magnetic Speakers & Powered Subwoofer, 4000K Interior LED Lighting Package (Square / Strip), COBRA (Cab Over Bunk Ram Air), Entry Step Battery Compartment, Multiple Charging Ports (USB, USB-c, 120V), Molded front overhead bunk with Lights, Chargers, Privacy Curtain and A/C, Power Theatre Seating w/ Ratcheting Head Rests, Power Recliners and Dual Composite Sofa Tables, Rear Wardrobe, Front Bunk Ladder, AquaHave Rainfall Shower and Wand System, Fully convertible 36" x 32" bathroom to living room, plus hidden drain, Matte Black Bathroom Faucet and Shower Tower, Matte Black Retractable Shower Door, Solid Surface Lav Countertop w/ Undermount Stainless Sink, Porcelain Toilet, Matte Black Bathroom Harwards Accessory Package, 12V Power Vent, Firefly Integrations® Touch Screen Command Center, Bluetooth® Switches & Smart Phone App (Global), Titan Aluminum 4-Point Hydraulic Leveling Jacks, Battery Disconnects (Entry & Battery Service), 1,800 Watt Xantrax Pure Sine Wave Inverter, 4500kW NPS® LP Generator with Auto Generator Start Capabilities, ATG Designed Gree A/C System (Ducted 15KBTU AC w/ 12K Heat Pump, Soft Start & Dehumidifier, Linear Slot Diffusers, RV Airflow Package, Custom Return Air Plenum and Insulated Ducting, Truma® Aqua Go Comfort™ On-Demand Water Heater, Utility Center (Water Management Valve, Exterior Shower, Cable TV Hookup, Black Tank Flush), SureLevel® Tank Level Monitoring System, 12V Water Pump (4 gallons per minute), 12V Heat Pads (Fresh, Gray & Black Tanks), Carbon-Monoxide, LP/ Smoke Detectors & Fire Extinguisher, Temp sensors (Battery Compartment, Interior, Exterior), (1) Lithionics 12V 310Ah Lithium-Ion Battery (4.0Wh), 30 Amp Electrical Service w/ Southwire Transfer Switch, Kisae DC-DC Charger / Solar Controller, StarLink Satellite Internet, (3) 180 watt (540 w Total) Merlin Solar Panels with 30-Amp Controller,
Firefly Integrations® Touch Screen Command Center, Bluetooth® Switches & Smart Phone App (Global), Titan Aluminum 4-Point Hydraulic Leveling Jacks, Battery Disconnects (Entry & Battery Service), 1,800 Watt Xantrax Pure Sine Wave Inverter, 4500kW NPS® LP Generator with Auto Generator Start Capabilities, ATG Designed Gree A/C System (Ducted 15KBTU AC w/ 12K Heat Pump, Soft Start & Dehumidifier, Linear Slot Diffusers, RV Airflow Package, Custom Return Air Plenum and Insulated Ducting, Truma® Aqua Go Comfort™ On-Demand Water Heater, Utility Center (Water Management Valve, Exterior Shower, Cable TV Hookup, Black Tank Flush), SureLevel® Tank Level Monitoring System, 12V Water Pump (4 gallons per minute), 12V Heat Pads (Fresh, Gray & Black Tanks), Carbon-Monoxide, LP/ Smoke Detectors & Fire Extinguisher, Temp sensors (Battery Compartment, Interior, Exterior), (1) Lithionics 12V 310Ah Lithium-Ion Battery (4.0Wh), 30 Amp Electrical Service w/ Southwire Transfer Switch, Kisae DC-DC Charger / Solar Controller, StarLink Satellite Internet, (3) 180 watt (540 w Total) Merlin Solar Panels with 30-Amp Controller,
MORryde® Tubular Steel Chassis Halo Upfit, Aluminum Exterior Luggage Doors (Side Swing & Key Alike), Heavy Gauge Aluminum Framed Sidewall, Roof and Floor - Laminated w/ Block Foam Insulation, Exterior Sidewall - Talon Sheet Glass w/ Azdel OnBoard Composite, Interior Sidewall - Composite Elk Board w/ Decorative Wallboard, Exterior Roof - Textured Fiberglass w/ Titan Gasket Seal System / Rain Gutters, Interior Roof - Soft Touch Ceilings w/ 1 piece Elkboard, Aluminum Skinned Slideroom End Walls w/ Windows, Rigid HVAC Ductwork Throughout, Dual Pane European Acrylic Windows w/ Integrated Screen, Privacy Shade & Black Trim Kit, European Entry Door (Dual Latch, Poly Window, Integrated Shade, Side Slide Screen Door), Aluminum European Power Entry Step, Rotocast Storage Compartments w/ timed Lighting, Lippert SlimRack® Slide-Out, Steel Reinforced, Insulated, Fiberglass Wingwalls w/ Diamond Shield® Paint Protection, 12V (DC) w/ Spyder Controls DC Distribution panel & 120V (AC) harnesses, SharkBite Evo Pex Push2Connect Plumbing System (Max SS braided shut offs), Aluminum Roof Sport Rack, One piece Eternabond Slideout Roof, Steel Stepwell / Battery Box with Temp Sensor, Aluminum Framed Interior Walls, 3500lbs Tow Hitch w/ 7 Way Round & 4 Way Flat,
Mercedes-Benz® Sprinter 4500 Cab Chassis with 170" Wheelbase, GVWR 12,125 lbs. / GCWR 15,250 lbs., 2.0 Ltr Inline 4-Cylinder High Output TwinTurbo Diesel (208HP/332lb-ft), 9G-TRONIC Automatic Transmission / Rear Wheel Drive, Alternator 14V 280A, Driver/Passenger HeadRest Safe (permanent install), Comfort Package, Driver Convenience Package, Power Windows & Door Locks w/ Multiple Key FABs, MBUX Multimedia System w/10.25 touchscreen (AM/FM, Apple® CarPlay™ / Android® Auto™), Comfort Plus Package, Thermotronic Automatic Climate Control, Multifunctional Leather Steering Wheel (Heated, Adjustable - Angle), D/P Seats - Swivel, Heated, Power, Arm Rests, Storage Pockets and Lumbar Support, D/P Door Mounted Assist Handles, 115V Socket / USB-C Socket 5V / 12V Outlet Driver Seat Base, Active Brake Assist, Crosswind Assist, Attention Assist, Hill Start Assist, Fog Lamps with cornering light function, High Beam Assist, LED Tail, Brake, Marker, Turn and Backup Lights, LED High Performance headlamps, Dual Chassis Battery 12V 92AH 850A (w/disconnect), Jump Start Terminal, Electronic Stability Program (ESP), Acoustic Package, Park brake lever, folding, Winter Package Plus, Wet Wiper System / Rain Sensor, Emergency Call System (ECALL), Heated & Electrically Adjustable Exterior Mirrors, Dashboard Charging Package, Front Cup Holders, Outside Temperature Gauge, 215/85R16 All-Season Tires, Tire Pressure Monitoring Lamp (TPMS x 6 tires), Front & Rear Mudflaps, Axle Ratio 4,727, Cockpit Privacy Shades (Windshield, Driver & Passenger), Fiberglass Running Boards w/ traction tread and Diamond Shield® Paint Protection,
* Vehicle specifications listed to the best of our knowledge. All specifications, features, and information are provided by the manufacturer. Southland RV is not responsible for manufacturer defects, specification changes, or recalls. Buyers should verify all information directly with Southland RV.
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Built to Last
Superior construction for years of adventures
HVAC
15,000 BTU Air Conditioning
Stay cool in any climate with powerful cooling capacity.
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from $1,281/mo
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Showroom Hours
Mon: Closed, Tue-Sat: 9 AM - 5 PM, Sun: Closed
1327 Lafayette Pkwy LaGrange, GA 30241
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Manufacturer and/or stock photographs may be used and may not be representative of the particular unit being viewed. We are not responsible for any misprints, typos, or errors found in our website pages. Any price listed excludes sales tax, registration tags, and delivery fees. Manufacturer pictures, specifications, and features may be used in place of actual units on our lot. Please contact us for availability as our inventory changes rapidly. All calculated payments are an estimate only and do not constitute a commitment that financing or a specific interest rate or term is available.
$179,995
est $1,192/mo