Heavy Hitter 300M Chromoly 12mm Jackshaft Bolt – E-Ride Pro
The Heavy Hitter 300M Chromoly Jackshaft Bolt is a heat-treated chromoly steel upgrade for the E-Ride Pro jackshaft. It's engineered to be stronger than OEM while bending rather than snapping under extreme load. Titanium and Grade 12.9 bolts were tested and rejected because their metal composition makes them brittle: they snap instead of bend, leaving you stranded on the trail. 300M chromoly eliminates that risk.
✅ BIKE FITMENT
- E-Ride Pro SS 3.0 (all years)
- E-Ride Pro 4.0 (all years)
- E-Ride Pro SR (all years)
- E-Ride Pro S / SS 2.0 (2026 and newer)
Note: 2026 E-Ride Pro S / SS 2.0 models switched to a 12mm bolt. Earlier S / SS 2.0 models use 10mm hardware, so please confirm your bike is not using the old 10mm hardware before you buy.
Features
- Turned from 300M chromoly steel
- Heat treated for added durability and hardness
- Stronger than OEM hardware, with a bend-not-snap failure mode that keeps you riding
- Best plug-and-play option for the stock swingarm
- 6mm Allen head and 14mm hex nut for easy installation
What's Included
- 1x Heavy Hitter 300M chromoly 12mm jackshaft bolt
- 1x flange nut
Riding hard? Even with the best material, riders who send it hard can bend any bolt on the market and may unknowingly bend their swingarm. Repeated chain derailment without hitting anything is a sign of swingarm flex. For the ultimate fix, see the Heavy Hitter Rogue Swingarm.
Frequently Asked Questions
Which E-Ride Pro models does this bolt fit?
All years of the E-Ride Pro SS 3.0, 4.0 and SR, plus 2026 and newer E-Ride Pro S / SS 2.0.
Will it fit my older E-Ride Pro S or SS 2.0?
Pre-2026 S / SS 2.0 models use 10mm hardware. This is a 12mm bolt, so please confirm your bike is not using the old 10mm hardware before you buy.
Why not titanium or Grade 12.9?
Both were tested and rejected because they are brittle and snap instead of bend. 300M chromoly bends rather than snapping, so you can keep riding.
Is a nut included?
Yes. A flange nut is included.
What tools do I need?
A 6mm Allen and a 14mm wrench or socket.
My chain keeps derailing. Will this fix it?
Repeated chain derailment without hitting anything is a sign of swingarm flex. For the ultimate fix, see the Heavy Hitter Rogue Swingarm.
