I've been wrenching on my own bikes for thirty-four years. Last month I almost called a Harley dealer to fix something I should be able to fix myself. If you've ever owned a Sportster, you already know which bolt I'm talking about.

Let me back up.

My name is John. I'm fifty-nine. I'm a retired millwright from outside Milwaukee. I've owned eleven bikes since I was twenty-five. Four Sportsters, two Dynas, a Fat Boy I should have kept, a Road King I shouldn't have bought, and the three sitting in my garage right now: a '96 Evo Sportster 1200, an '06 Street Glide, and a '79 Shovelhead that I've been restoring since my daughter left for college because I needed something to do with my hands that wasn't checking my phone to see if she'd called.

The garage is my place. Saturday mornings. Coffee on the workbench. The radio on low. The door open and the cold coming in because I don't heat the garage and my wife Karen stopped asking why fifteen years ago. I don't golf. I don't fish. I go out there at seven in the morning and I come back when she calls me for lunch and somewhere in between I forget about everything that isn't the motor in front of me. Some guys call it a hobby. I call it the only thing that's kept me level for three decades.

The Rear Exhaust Stud On A Sportster

Here's what I need you to understand. In thirty-four years, on every single V-twin I've ever owned, there is one job that takes that feeling away from me. One job that turns Saturday morning therapy into Saturday afternoon rage.

The rear exhaust stud on a Sportster.

If you've owned one, you just nodded. If you haven't, here's what you need to know. The exhaust studs on a Harley are interference fit. They're designed to stay in. Heat, vibration, twenty thousand miles of expansion and contraction, and they corrode into the aluminum head like they were welded there. When one cracks or strips and you need to remove it, it doesn't come out. It breaks. Flush with the head. And then you're not doing a Saturday morning job anymore. You're doing math you don't want to do.

I've broken exhaust studs on four different Sportsters. Four bikes. Same stud. Same rear cylinder. Same three-quarter inch gap between the fin and the frame downtube where no tool on earth gets in with enough swing to do anything useful.

Three-quarter inch of space between the fin and the frame downtube. The rear exhaust stud lives in that gap. Nothing in your toolbox fits in there with enough swing to break a heat-fused stud free.

What I've Tried, And You've Probably Tried The Same

Let me tell you what I've tried, because I know you've tried the same things and I know you're nodding again.

• 3/8 ratchet with deep socket: handle hits the frame before you get ten degrees of swing. Ten degrees on a stud that's been heat-fused into aluminum for fifteen years is nothing.
• Wobble extension: the socket walks off the stud every time you load the ratchet. You can feel it rock. You know it's going to round the hex before it breaks the stud free. You do it anyway because you don't have another option. And then it rounds the hex.
• Flex-head ratchets — Snap-on AND Matco ($280 combined): the Snap-on flexes at forty foot-pounds. The Matco flexes at thirty-five. Two hundred and eighty dollars for two ratchets that fold like paper napkins on a bolt that needs sixty.
• Universal joint on a long extension: deflects sideways under torque. Every time. The socket goes wherever the universal wants it to go, which is anywhere except on the stud.
• Crow foot wrench: too wide. Won't fit between the fin and the frame by about a quarter inch. Close enough to make you angry. Not close enough to work.
• $28 Amazon "flex torque adapter" bought at one in the morning after a bad night under the Sportster: rounded the stud on the first pull. I threw it across the garage. There's still a dent in the drywall. Karen calls it my monument to poor decisions.

The drawer where good money goes to die. $280 of Snap-on and Matco. The $28 Amazon mistake. The crow foot that's a quarter inch too wide. Thirty-four years of evidence that flex is the problem, not the solution.

Then The Stud Snapped Flush

That's when I snapped the stud. Vise grips on a rounded hex. Too much force at a bad angle. The stud broke flush with the head. I heard it snap. I felt it in my hand. And I sat on my garage floor at two in the afternoon on a Saturday and stared at a broken stud inside the head of a Sportster and thought about what comes next.

What comes next is not good. You drill it out and pray the extractor grabs it clean. If the extractor breaks inside the stud, you now have hardened steel inside aluminum and you're pulling the head. Machine shop. Two hundred to three hundred dollars if the stud extracts clean. Six to eight hundred if it doesn't and the head needs repair. Plus the labor to pull the head, which I can do, but that's a full weekend on a bike I was supposed to be riding.

I called the Harley dealer on Monday. I don't know why. I knew what they were going to say. The service writer put me on hold, came back, and quoted me $1,700 and a five-week wait. Seventeen hundred dollars. For a stud. On a twenty-nine-year-old Sportster. I asked him to repeat the number. He did. Same number. Same tone. Like he'd said it a thousand times and didn't care anymore.

I didn't call back.

Three Weeks Later I Was At Sturgis

Not the main drag. The campground. The one where the guys who actually ride park their bikes and drink beer and tell stories that are mostly true. I've been going for nineteen years. I know every regular.

A guy named Dale was parked two spots over. Sixty-six years old. Retired pipe fitter from Rapid City. Been riding since Vietnam. His knuckles look like he's punched every engine Harley ever made, and he probably has. He was doing a field repair on his Shovelhead. Rear exhaust. The stud. I watched him slide a tool into the gap between the fin and the frame and break the stud free in about two minutes.

Two minutes. On the stud that's cost me four rounded bolts, a broken extractor, a dent in my drywall, and a $1,700 quote from a dealer who doesn't care.

I walked over. Not because I'm social. Because two minutes on that stud is not possible with any tool I've owned in thirty-four years.

Sturgis campground, August. Not the main drag. The one where the guys who actually ride park their bikes and drink beer and tell stories that are mostly true.

Dale had a blue metal bar in his hand. About fifteen inches long. Solid steel. Square drives on both ends. It looked like every other offset bar I've ever bought and been disappointed by. It looked like the bottom drawer of my toolbox where good money goes to die.

"Another bent bar," I said.

Dale didn't say anything. He handed it to me. I put my finger on the square drive and pressed. Inside the bar, something moved. A chain. An internal chain drive mechanism that transfers torque through the angle without any flex. Not a universal joint. Not a flex coupling. A roller chain. Solid. No play. No deflection.

"Fourteen years. Sportsters, Shovels, Evos, Twin Cams, Pan Americas. Japanese bikes. A buddy's BMW. If the bolt sits in a gap, this gets in there and it doesn't flex. Not at sixty foot-pounds. Not at a hundred. Fourteen years and it hasn't walked off a bolt once."

Dale, 66 · Retired Pipe Fitter, Rapid City SD · Riding since Vietnam · 14 years on the chain drive bar

I looked at him the way you look at someone when you have a drawer full of evidence that every tool is the same tool in different packaging.

Dale saw the look. Every old wrench sees the look. He said, "Try it on your bike right now. If it flexes, I'll buy your beer for the rest of the week."

The SavaryTool Offset Extension Wrench

An offset extension wrench with a sealed roller chain drive inside. Not a flex head. Not a wobble. Not a universal joint. A chain.

• Chain drive, zero flex. Full rotation from ratchet to socket, no weak point in between.
• Fits the 3/4" gap. Designed for the exact space between the cylinder fin and the frame downtube on every V-twin.
• Square drives on both ends. Use whichever side gives you swing room.
• Forged steel, sealed chain. Holds at 90+ ft-lbs without deflecting. No plastic. No hinge.

First Pull. Stud Was Free.

The Sportster had a rear exhaust stud that I'd been avoiding for three months. The one I'd been planning to pull the head for because I couldn't get anything in there to break it free. I slid Dale's wrench into the gap. Three-quarter inch of space between the cylinder fin and the frame downtube. The socket seated on the stud flush. No rock. No wobble.

I put the ratchet on and pulled.

The stud broke free on the first pull. Fifteen years of heat cycles in aluminum. First pull.

I stood there holding the ratchet and didn't say anything for about ten seconds. Dale didn't say anything either. He just nodded the way old wrenches nod when they see someone learn what they learned a long time ago.

I used it four more times that weekend. The other exhaust stud. A primary bolt on the Street Glide that three extensions couldn't reach. A starter bolt behind the exhaust pipe. A bracket bolt I'd been putting off for a year. Every bolt on the first pull.

Fourteen inches of solid steel. Twice the reach of a standard ratchet (top left). Square chrome drives on both ends mean you put your ratchet on whichever side has swing room. Same tool that gets in the 3/4" gap on a Sportster gets in everywhere else flex tools fail.

Why The Chain Drive Changes Everything

What Other V-Twin Riders Are Saying

Not testimonials I wrote. Real reviews from real wrenches. 78,000+ five-star reviews from Harley, V-twin, and Japanese-bike owners.

What To Expect After You Order

Savary vs. Everything Else In Your Bottom Drawer

What Riders Get After The Bar Arrives

• No more $1,700 dealer quotes for a thirty-second job.
• No more 5-week shop waits to drop a head you could fix yourself.
• No more rounded hexes on a stud that didn't have to round.
• No more pulling the head because the stud snapped flush.
• No more $280 of premium ratchets that fold at forty foot-pounds.
• No more dents in the drywall from tools that don't work.

The Questions Every V-Twin Rider Asks Before Buying

How Can You Get Your Hands On The Chain Drive Bar?

The maker sells direct from their site only. Not on Amazon. Not at the dealer. Not at Harbor Freight. Demand from V-twin riders has been at an all-time high since Sturgis — they've had to delay shipments twice this year already. If you're seeing this page, the bar is in stock right now.