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2005 Big Dog Mastiff

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

About this comparison →
1Owner complaints

Model-year median: 1

0Recall campaigns

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0Investigations

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How this year compares

Owner complaints by model year

Other model years Selected year
4
20041
20051
20062
20071
2008
Compare all Mastiff years →

Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

Power Train
1

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 1 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Power Train. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports0 fire reports0 injury reports

Power Train complaints

1 reports
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6,800 miles · Nov 24, 2009
Power Train

2005 BIG DOG MASTIFF MOTORCYCLE. IS KNOWN FOR HAVING A BAD EHC UNITS. EHC IS THE BRAIN BOX OF THE MOTORCYCLE WHEN THIS FAILS IT SHUTS DOWN THE MOTORCYCLE LIGHTS AND EVERYTHING. HAD THIS HAPPEN ON MINE NUMEROUS TIMES. GOT DIFFERENT EHC UNIT HAVEN'T HAD THE PROBLEM SINCE. OK NEXT PROBLEM WITH BIKE IS THE TRANNY. IT'S A BAKER 6…

Read full complaint

2005 BIG DOG MASTIFF MOTORCYCLE. IS KNOWN FOR HAVING A BAD EHC UNITS. EHC IS THE BRAIN BOX OF THE MOTORCYCLE WHEN THIS FAILS IT SHUTS DOWN THE MOTORCYCLE LIGHTS AND EVERYTHING. HAD THIS HAPPEN ON MINE NUMEROUS TIMES. GOT DIFFERENT EHC UNIT HAVEN'T HAD THE PROBLEM SINCE. OK NEXT PROBLEM WITH BIKE IS THE TRANNY. IT'S A BAKER 6 SPEED TRANNY. GOING DOWN HIGHWAY WITH WIFE HEAR POP THE SEEMS TO GO INTO NEUTRAL NO CLUTCH NOTHING GOT BACK TO SHOP THEY TORE DOWN TO FIND THE MAIN SHAFT OR TRANNY SHEARED OFF IN SIDE CASE OF TRANNY. WE WERE LUCKY THE TRANNY DIDN'T LOCK UP AT 65-70 MPH. GOING TO A SITE FOR BIG DOG BIKERS FORUM FIND OUT MANY BIG DOG OWNERS ARE HAVING THIS PROBLEM. I'M HOPING YOU CAN HELP US OUT ON THIS PROBLEM AND GET BIG DOG OR BAKER TRANSMISSION FIX THIS PROBLEM AND GET THESE ROAD WORTHY AND SAFE TO RIDE AND ONES WHO HAVE FIXED THE PROBLEM ON THERE OWN GET THERE MONEY BACK EITHER FROM BIG DOG OR BAKER. BOTH COMPANIES KNOW OF THIS TRANNY PROBLEM BUT DOESN'T WANT TO FIX IT THEY BLAME THE OTHER ON WHO IS AT FAULT. DOES IT TAKE SOMEONE TO DIE BECAUSE OF PROBLEM TO GET THIS FIX AND MAKE THESE BIKES SAFE TO RIDE. *TR

NHTSA ODI #10293396

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.