Locks

Bell Catalyst 300 vs OnGuard Brute LS

A $20 starter U-lock against a $100 hardened one, both aimed at students and commuters. Both come with frame brackets and anti-theft offers, but the OnGuard's quad-locking shackle and Sold Secure Silver rating put it a notch above the Bell on real-world security.

Option A

Bell Catalyst 300 U-Lock

Bell · U Lock

8 in hardened steel shackle
Single-bolt key lock
Vinyl coating to protect frame finish
Quick-release carrying bracket included
$500 anti-theft protection offer

Sizing: 8" shackle window fits frame + rack post for typical campus and city locking.

MSRP: $17.5-$23 · Amazon ~$19.95

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Option B

OnGuard Brute LS 8004

Onguard · U Lock

Sold Secure Silver rating
16.8 mm TriRadius hardened steel shackle
X4P quad-locking mechanism (4-sided)
Inner 3.5" x 7.5" (9 x 19 cm)
Lifetime warranty

Sizing: Inner 3.5" x 7.5" - mid-size U-lock that fits frame + single wheel through the U + a fixed rack.

MSRP: $88-$115 · Amazon ~$99.95

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Side-by-side spec sheet

Security ratingLS 8004

Bell Catalyst 300 U-LockManufacturer rating only

OnGuard Brute LS 8004Sold Secure Silver

Shackle diameterLS 8004

Bell Catalyst 300 U-LockStandard hardened steel

OnGuard Brute LS 800416.8 mm TriRadius

Locking mechanismLS 8004

Bell Catalyst 300 U-LockSingle bolt (key)

OnGuard Brute LS 8004X4P quad-locking (4-sided)

Inner shackle windowTie

Bell Catalyst 300 U-Lock8 in long

OnGuard Brute LS 80043.5" x 7.5"

Frame mount includedTie

Bell Catalyst 300 U-LockQuick-release bracket

OnGuard Brute LS 8004Yes

Anti-theft / warrantyLS 8004

Bell Catalyst 300 U-Lock$500 anti-theft offer

OnGuard Brute LS 8004Lifetime warranty

Amazon price300 U-Lock

Bell Catalyst 300 U-Lock$19.95

OnGuard Brute LS 8004$99.95

Aspect	Bell Catalyst 300 U-Lock	OnGuard Brute LS 8004	Winner
Security rating	Manufacturer rating only	Sold Secure Silver	LS 8004
Shackle diameter	Standard hardened steel	16.8 mm TriRadius	LS 8004
Locking mechanism	Single bolt (key)	X4P quad-locking (4-sided)	LS 8004
Inner shackle window	8 in long	3.5" x 7.5"	Tie
Frame mount included	Quick-release bracket	Yes	Tie
Anti-theft / warranty	$500 anti-theft offer	Lifetime warranty	LS 8004
Amazon price	$19.95	$99.95	300 U-Lock

The verdict

Pick the OnGuard Brute LS 8004 if you ever lock outside in a city - the 16.8 mm TriRadius shackle, X4P quad-locking mechanism, and Sold Secure Silver rating all outclass the Bell, though it now costs about five times as much on Amazon. Pick the Bell Catalyst 300 if you only need a deterrent for low-risk indoor or campus parking and want the simpler single-bolt mechanism with Bell's $500 anti-theft offer.

Best value

Bell Catalyst 300 - a fifth of the OnGuard price with a frame bracket and a $500 anti-theft offer, which is enough lock for indoor or campus parking.

Best performance

OnGuard Brute LS 8004 - thicker TriRadius shackle and 4-sided X4P locking resist leverage attacks far better than the Bell's single-bolt design.

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