Royal Enfield 148448 – Button Head Bolt M8 x 1.25 x 16 Locking – Continental GT 650 & Interceptor 650 BS4 Frame / Rear Suspension Genuine OEM

The Royal Enfield 148448 Button Head Bolt (M8 x 1.25 x 16, Locking) is a genuine OEM fastener used in critical chassis locations on the 650 Twin platform. Official European Royal Enfield microfiche lists 148448/A and its supersession 148448/B as “BUTTON HEAD, M8X1.25X16, LOCKING” used in the frame assembly and rear suspension diagrams for Continental GT 650 Euro 4 and Interceptor 650 Twin Euro 4.

This bolt features an M8 x 1.25 fine thread, button/round head and locking design, making it suitable for vibration-prone areas such as shock mounts, frame brackets and other structural joints on the 650 Twins. Using genuine hardware is critical in these areas; cheap local bolts may not match tensile strength, thread accuracy or head profile, which can lead to loosening, misalignment or even component damage over time.

Reputable dealers and parts books (Hitchcocks, Bike-Parts-RoyalEnfield) all identify 148448 as an OEM locking button-head fastener for modern Royal Enfield models, with confirmed usage on Continental GT 650 BS4/Euro 4 and Interceptor 650 Twin BS4/Euro 4.

This listing is ideal for workshops and 650 owners doing accident repairs, frame/suspension work, or high-quality restorations where every fastener must match factory spec. Under The Hood supplies only sealed genuine Royal Enfield parts, helping you maintain safety, reliability and resale value.

Key Features

• Genuine Royal Enfield OEM bolt – Part No. 148448 (superseded from 148448/A to 148448/B in factory catalogues).

• Specified in parts books as “BUTTON HEAD, M8 x 1.25 x 16, LOCKING” for 650 Twins.

• Confirmed application in frame assembly and rear suspension diagrams for Continental GT 650 Euro 4 and Interceptor 650 Twin Euro 4.

• Ideal for structural joints: shock absorber mounts, frame brackets and other vibration-prone locations.

• Locking design compatible with OEM torque specs; helps resist loosening under high-frequency vibration.

• Correct button-head profile ensures proper tool engagement and clearance with surrounding components.

• Manufactured to Royal Enfield standards for material strength, thread accuracy and corrosion resistance.

• Perfect for accident repair, chassis rebuilds or restoration where correct hardware matters.

• Supplied as a single, genuine part – not a generic hardware-store bolt.

Compatibility Table

Important Notes / Exclusions

• Parts catalogues show this bolt used on Euro 4 / BS4 650 Twins. It is very likely used on later Euro 5/BS6 variants, but since the microfiche we can see explicitly tags Euro 4, we only advertise confirmed Euro 4 fitment to avoid returns.

• Not listed as a specific, named fastener for Classic, Bullet, Thunderbird, Himalayan, J-Series, Scram, Guerrilla or 450 models in the OE sources checked. For those bikes, treat this as generic M8 hardware only if the exact part number matches your bike’s catalogue.

Variants

This is a single-specific fastener:

• 148448 / 148448/B – Button Head Bolt, M8 x 1.25 x 16, Locking – Single piece

(If your physical packaging shows 148448 or 148448/B, it refers to this same OEM locking button-head bolt.)

FAQs

Q1. Where exactly is this bolt used on my 650 Twin?
It is used in frame and rear suspension assemblies (for example, shock absorber mounting and related brackets) on Continental GT 650 and Interceptor 650 Euro 4, as shown in official Royal Enfield microfiche.

Q2. Can I use this bolt on other Royal Enfield models as a generic fastener?
Mechanically it is an M8 x 1.25 locking button-head bolt, so it may physically fit. However, for safety and warranty reasons, we recommend using it only where the exact part number 148448 / 148448B appears in your model’s parts catalogue.

Q3. Is this genuine or aftermarket hardware?
This is a genuine Royal Enfield spare part, sourced through authorised channels, not a universal or local hardware-store bolt.

Q4. How many bolts are included in this listing?
The price is for 1 piece (single bolt). Factory diagrams may require multiple pieces per bike (for example, two per rear suspension), so order the quantity your parts book specifies.

Q5. What if I’m not sure this is the right fastener?
Check your Royal Enfield parts catalogue / microfiche for your exact model and assembly. If the part number matches 148448 / 148448B, this is the correct bolt. If not, share your VIN and model details with us for guidance.