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A breakdown of every frame bolt on the Specialized Tarmac SL9: seatpost clamp (M4), front derailleur hanger (M4×2), bottle cages (M5×4), headset cap (M3). Stock steel total 19.7g. Titanium replacements drop it to 8.3g, saving 11.4g. Covers frame vs groupset bolt differences, galvanic corrosion advantages of titanium in carbon frames, and install tips.

Shimano doesn't publish pulley bolt weights — here are the actual numbers. R9270 Dura-Ace: 2.6g per pair. R8170 Ultegra and R7170 105: 4.0g per pair. Titanium replacements drop to 1.0g across all three, saving up to 3g (75% on Ultegra/105). Covers galling prevention for Ti threads in aluminum cage plates and why a pulley swap is the ideal moment to upgrade the bolts.

TiNE titanium opposed-lock chainring bolt pair: 2.0g versus roughly 10-12g steel per pair. Five pairs on a standard 110 BCD spider total 10g, saving roughly 40-50g from the rotating assembly. Double-sided hex design places a socket on both bolt head and nut — two 5mm Allen keys work opposite each other for clean torque. Bolt M8 × 6mm thread, nut 7mm thread length. Grade 5 Ti-6Al-4V, CNC machined, 8-color anodized finish. Torque in star pattern to roughly 5-8 Nm.

TiNE titanium bar end plugs replace stock plastic plugs with topology-optimized Grade 5 Ti-6Al-4V. 3g per pair, hex-star cutout lattice design removes material from non-load zones for lighter and stiffer plug. Fits roughly 19mm inner bar diameter — the common drop bar standard. Friction-fit installation: no adhesive, no expanding wedge. 8-color anodized finish. Pull out with pliers when re-wrapping bar tape.

TiNE titanium shifter clamp band replacement for SRAM and Shimano groupsets. Single band 4.8g, pair 9.6g. Weight savings: ~22.8g vs SRAM Red pair (~32.4g), ~24.2g vs Shimano 8170/7170, ~12g vs Shimano 9270. V-profile clamp design spreads force across wider contact arc, reducing carbon bar hot spots. Curved inner face CNC-matched to bar diameter. No anodizing for precision clamp face tolerance. Grade 5 Ti-6Al-4V.

TiNE seatpost clamp head tuning set replaces the stock steel clamp with 2 titanium bolts, 1 carbon fiber base, and 2 7075 aluminum arms. Ten frame-specific platforms: V5RS/Y1RS (20.8g, saves 45.2g), Cervelo S5 (21.4g, 40.4g), Colnago (20.3g, ~62.8g), Pinarello 21-24 (22.1g), Pinarello 25 (22.1g), Roval (20.8g), Darimo (17.9g), Exs (19.1g), Quick Pro ER One (22.5g). Grade 5 Ti-6Al-4V bolts, 8-color anodized.

CeramicSpeed OSPW cage screw upgrade: TiNE titanium 4-piece set. Old cage version weighs 1.9g vs stock 3.6g (saves roughly 1.7g), new cage version weighs 2.4g vs stock 5.2g (saves roughly 2.8g). Critical torque sequence: 1Nm → 0.3Nm → 1Nm → 0.3Nm top to bottom (alternating pattern balances cage plate tension). Grade 5 Ti-6Al-4V, CNC, 8 anodized colors. Rider story: Mark's cage alignment fix.

Bike computer mount upgrade: TiNE 3D-printed titanium body weighs 8.8g with 3.8g detachable under-hang bracket (for GoPro/lights). Fits over 30 integrated bar models including Specialized Roval Rapide, Cervelo S5, Colnago Y1RS, Trek Madone SLR. Topology optimization removes material from non-load areas. Grade 5 Ti-6Al-4V, roughly 45% lower density than steel.

Specialized Tarmac seatpost clamp head opposed-lock bolt upgrade with TiNE titanium. One bolt + one nut pair: 7.1g versus roughly 19.5g stock, saving roughly 12.4g. Opposed-lock design threads bolt and nut from both sides of the clamp head for even saddle rail pressure. Fits SL6/SL7/SL8 direct-head seatposts. Grade 5 Ti-6Al-4V, CNC-machined, eight anodized colors. Torque roughly 4-6 Nm.