Jagwire Sport 4mm Mini Inline Cable Tension Adjusters Pair, Titanium

The Jagwire Sport 4mm Mini Inline Cable Tension Adjusters Pair, Titanium (part CHA035) is a lightweight, durable solution for fine-tuning derailleur cable tension on the fly—ideal for mountain bike, road, gravel, or any shift cable setup where quick, precise adjustments are needed without reaching the barrel adjuster at the shifter or derailleur.

These mini inline adjusters are machined from alloy with a sleek titanium (anodized gray/silver) finish for corrosion resistance and a premium look. They install directly into your existing 4mm shift housing (compatible with standard derailleur cables and housing), allowing easy mid-cable tweaks to maintain crisp shifting as cables stretch over time or conditions change. Each pair includes two 50mm lengths of pre-cut 4mm end-capped derailleur housing for seamless integration. The knurled barrels provide excellent grip for tool-free adjustments, and they're not indexed (smooth threading) and not recommended for brake systems—strictly for shifting.

Super lightweight (around 30g per set) and reliable, they're a popular upgrade for riders who want better accessibility and performance from their drivetrain.