Koswork Kyosho Mid Optima Rear 1.0mm Softest RC Anti-Roll Bar - KOS04305-R1.0

The Koswork KOS04305-R1.0 is a rear stabilizer anti-roll bar designed specifically for the Kyosho Mid Optima, rated as the softest option in the Koswork range at 1.0mm diameter. Anti-roll bars are a key tuning component in RC car suspension, controlling body roll through corners and influencing how the rear end responds to directional changes. If you're running a Mid Optima and want to dial in looser, more forgiving rear grip — particularly on high-traction surfaces where oversteer stability matters — starting with the softest bar gives you a clear baseline to tune from.

Key Features

• 1.0mm diameter makes this the softest rear anti-roll bar in the Koswork range, allowing maximum rear compliance and reduced mechanical grip transfer
• Softer bar setting reduces resistance to body roll, which can free up the rear end for more rotation on high-bite tracks
• Direct-fit replacement for the Kyosho Mid Optima rear suspension — no modification required
• Part number KOS04305-R1.0 makes it straightforward to match against other stiffness options in the Koswork stabilizer bar lineup for back-to-back tuning comparisons
• Manufactured by Koswork, a brand focused on precision RC tuning and hop-up components

What's Included

• 1x Koswork KOS04305-R1.0 rear 1.0mm stabilizer anti-roll bar

What You Need

• Kyosho Mid Optima RC car (sold separately)
• Appropriate hand tools for rear suspension disassembly and reassembly