Vitus E Sommet EP8 — any one got a link to the silver torque bolt that holds the ep8 motor in they are torque bolts M8 T40 bolt size

[Fuckedbike]

I ride a Vitus e sommet ep8 .

Bolt possible m8 t40 1bl.

@Greg Watts

 

[Greg Watts]

I'm going to be honest — that question's a bit cryptic, so let me make sure I'm answering the right thing.

Reading it as "is the bolt possibly an M8, T40, single bleed/blue thread-lock?" — but I genuinely can't tell which bolt you mean on your Vitus E-Sommet. There are a lot of M8s on that frame, and the torque and head type vary depending on which one.

A few things I can tell you straight:

M8 + T40 is an unusual pairing. A T40 Torx is a fairly large drive — you'd normally see it on bigger structural bolts. Plenty of pivot hardware uses M8 but with a hex (commonly 5mm or 6mm) or a smaller Torx, so if yours genuinely takes a T40 it's worth noting which pivot it came from. That's not me doubting you — if T40 is what's seating in the head, that's what it is.

"1bl" I'm not sure on. If that's shorthand for blue thread-locker (medium-strength, like Loctite 243), that's the right stuff for most frame pivot bolts — removable but won't rattle loose. If it means something else (a part number suffix, a bleed reference), tell me and I'll re-aim.

On torque — I don't have the verified per-bolt torque table for the E-Sommet frame to hand, so I'm not going to invent a figure. For reference, @TCFlowClyde ran a custom titanium main pivot M8 at 10–12 Nm, but that's a different frame and Ti bolts torque differently to steel. Don't apply that to yours blind.

Worth knowing: @Ndanger makes the point that some brands deviate from the "standard" torque with custom inserts or washers, so the only number I'd trust for a structural pivot bolt is the one in the Vitus service manual for your frame.

If you can tell me:
• Which bolt — main pivot, shock mount, lower link, motor mount?
• Whether you're after the torque spec, a replacement, or confirming the thread-lock?

…I'll give you the exact answer rather than guessing across a frame full of fasteners.

What's the bolt and what are you trying to do with it?

 

[Fuckedbike]

I'm going to be honest — that question's a bit cryptic, so let me make sure I'm answering the right thing.

Reading it as "is the bolt possibly an M8, T40, single bleed/blue thread-lock?" — but I genuinely can't tell which bolt you mean on your Vitus E-Sommet. There are a lot of M8s on that frame, and the torque and head type vary depending on which one.

A few things I can tell you straight:

M8 + T40 is an unusual pairing. A T40 Torx is a fairly large drive — you'd normally see it on bigger structural bolts. Plenty of pivot hardware uses M8 but with a hex (commonly 5mm or 6mm) or a smaller Torx, so if yours genuinely takes a T40 it's worth noting which pivot it came from. That's not me doubting you — if T40 is what's seating in the head, that's what it is.

"1bl" I'm not sure on. If that's shorthand for blue thread-locker (medium-strength, like Loctite 243), that's the right stuff for most frame pivot bolts — removable but won't rattle loose. If it means something else (a part number suffix, a bleed reference), tell me and I'll re-aim.

On torque — I don't have the verified per-bolt torque table for the E-Sommet frame to hand, so I'm not going to invent a figure. For reference, @TCFlowClyde ran a custom titanium main pivot M8 at 10–12 Nm, but that's a different frame and Ti bolts torque differently to steel. Don't apply that to yours blind.

Worth knowing: @Ndanger makes the point that some brands deviate from the "standard" torque with custom inserts or washers, so the only number I'd trust for a structural pivot bolt is the one in the Vitus service manual for your frame.

If you can tell me:
• Which bolt — main pivot, shock mount, lower link, motor mount?
• Whether you're after the torque spec, a replacement, or confirming the thread-lock?

…I'll give you the exact answer rather than guessing across a frame full of fasteners.

What's the bolt and what are you trying to do with it?

Silver toque bolt drive side which holds the ep8 motor to the frame. Attached the missing bolt

 

[Greg Watts]

Silver toque bolt drive side which holds the ep8 motor to the frame. Attached the missing bolt 187230

@Fuckedbike - welcome to the forum, good that you've got a photo of the missing bolt - that's exactly the right way to approach this.

So you're after the drive-side motor mount bolt for the EP8 on your E-Sommet. That silver bolt holding the motor casing to the frame is a Shimano-specific fastener, and the spec you've described - M8, T40 Torx head - sounds plausible for a motor mount bolt, but I want to be straight with you: I can't confirm the exact part number or torque spec from my verified data, so I'm not going to invent a figure.

What I'd recommend: For the bolt itself:

• Shimano dealer/distributor - your local Shimano-authorised shop can look it up in Shimano's service parts system using the EP8 motor exploded diagram. The part number will be in there.

• Shimano's own service documentation - search "Shimano EP8 DU-EP800 dealer's manual PDF" - Shimano publish these and they list every fastener with torque specs.

• Vitus directly - their customer service team at Chain Reaction are generally helpful for exactly this kind of spares query and will know the frame-specific hardware.

For the torque figure: don't go off anything I say here - motor mount bolts are structural and the number matters. Pull it from the Shimano dealer's manual only.

One thing worth checking from your photo: is the thread intact on the frame-side insert? If the bolt went missing rather than snapping, you should be fine - but worth a look before you order.